20921601240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1\times {\mathrm{1171}}^1$

素因数の和:1495

約数の個数: 256

約数和(自身を含む): 71085081600

約数和(自身を除く): 50163480360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 71, 72, 90, 108, 120, 135, 142, 180, 213, 216, 233, 270, 284, 355, 360, 426, 466, 540, 568, 639, 699, 710, 852, 932, 1065, 1080, 1165, 1171, 1278, 1398, 1420, 1704, 1864, 1917, 2097, 2130, 2330, 2342, 2556, 2796, 2840, 3195, 3495, 3513, 3834, 4194, 4260, 4660, 4684, 5112, 5592, 5855, 6291, 6390, 6990, 7026, 7668, 8388, 8520, 9320, 9368, 9585, 10485, 10539, 11710, 12582, 12780, 13980, 14052, 15336, 16543, 16776, 17565, 19170, 20970, 21078, 23420, 25164, 25560, 27960, 28104, 31455, 31617, 33086, 35130, 38340, 41940, 42156, 46840, 49629, 50328, 52695, 62910, 63234, 66172, 70260, 76680, 82715, 83141, 83880, 84312, 99258, 105390, 125820, 126468, 132344, 140520, 148887, 158085, 165430, 166282, 198516, 210780, 248145, 249423, 251640, 252936, 272843, 297774, 316170, 330860, 332564, 397032, 415705, 421560, 446661, 496290, 498846, 545686, 595548, 632340, 661720, 665128, 744435, 748269, 818529, 831410, 893322, 992580, 997692, 1091372, 1191096, 1247115, 1264680, 1364215, 1488870, 1496538, 1637058, 1662820, 1786644, 1985160, 1995384, 2182744, 2233305, 2244807, 2455587, 2494230, 2728430, 2977740, 2993076, 3274116, 3325640, 3573288, 3741345, 4092645, 4466610, 4489614, 4911174, 4988460, 5456860, 5955480, 5986152, 6548232, 7366761, 7482690, 8185290, 8933220, 8979228, 9822348, 9976920, 10913720, 11224035, 12277935, 14733522, 14965380, 16370580, 17866440, 17958456, 19371853, 19644696, 22448070, 24555870, 29467044, 29930760, 32741160, 36833805, 38743706, 44896140, 49111740, 58115559, 58934088, 73667610, 77487412, 89792280, 96859265, 98223480, 116231118, 147335220, 154974824, 174346677, 193718530, 232462236, 290577795, 294670440, 348693354, 387437060, 464924472, 523040031, 581155590, 697386708, 774874120, 871733385, 1046080062, 1162311180, 1394773416, 1743466770, 2092160124, 2324622360, 2615200155, 3486933540, 4184320248, 5230400310, 6973867080, 10460800620, 20921601240]

約数ペア:

[(1, 20921601240), (2, 10460800620), (3, 6973867080), (4, 5230400310), (5, 4184320248), (6, 3486933540), (8, 2615200155), (9, 2324622360), (10, 2092160124), (12, 1743466770), (15, 1394773416), (18, 1162311180), (20, 1046080062), (24, 871733385), (27, 774874120), (30, 697386708), (36, 581155590), (40, 523040031), (45, 464924472), (54, 387437060), (60, 348693354), (71, 294670440), (72, 290577795), (90, 232462236), (108, 193718530), (120, 174346677), (135, 154974824), (142, 147335220), (180, 116231118), (213, 98223480), (216, 96859265), (233, 89792280), (270, 77487412), (284, 73667610), (355, 58934088), (360, 58115559), (426, 49111740), (466, 44896140), (540, 38743706), (568, 36833805), (639, 32741160), (699, 29930760), (710, 29467044), (852, 24555870), (932, 22448070), (1065, 19644696), (1080, 19371853), (1165, 17958456), (1171, 17866440), (1278, 16370580), (1398, 14965380), (1420, 14733522), (1704, 12277935), (1864, 11224035), (1917, 10913720), (2097, 9976920), (2130, 9822348), (2330, 8979228), (2342, 8933220), (2556, 8185290), (2796, 7482690), (2840, 7366761), (3195, 6548232), (3495, 5986152), (3513, 5955480), (3834, 5456860), (4194, 4988460), (4260, 4911174), (4660, 4489614), (4684, 4466610), (5112, 4092645), (5592, 3741345), (5855, 3573288), (6291, 3325640), (6390, 3274116), (6990, 2993076), (7026, 2977740), (7668, 2728430), (8388, 2494230), (8520, 2455587), (9320, 2244807), (9368, 2233305), (9585, 2182744), (10485, 1995384), (10539, 1985160), (11710, 1786644), (12582, 1662820), (12780, 1637058), (13980, 1496538), (14052, 1488870), (15336, 1364215), (16543, 1264680), (16776, 1247115), (17565, 1191096), (19170, 1091372), (20970, 997692), (21078, 992580), (23420, 893322), (25164, 831410), (25560, 818529), (27960, 748269), (28104, 744435), (31455, 665128), (31617, 661720), (33086, 632340), (35130, 595548), (38340, 545686), (41940, 498846), (42156, 496290), (46840, 446661), (49629, 421560), (50328, 415705), (52695, 397032), (62910, 332564), (63234, 330860), (66172, 316170), (70260, 297774), (76680, 272843), (82715, 252936), (83141, 251640), (83880, 249423), (84312, 248145), (99258, 210780), (105390, 198516), (125820, 166282), (126468, 165430), (132344, 158085), (140520, 148887)]