261120420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:687

約数の個数: 216

約数和(自身を含む): 917891520

約数和(自身を除く): 656771100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 121, 132, 165, 171, 180, 190, 198, 209, 220, 228, 242, 285, 330, 342, 363, 380, 396, 418, 484, 495, 570, 605, 627, 631, 660, 684, 726, 836, 855, 990, 1045, 1089, 1140, 1210, 1254, 1262, 1452, 1710, 1815, 1881, 1893, 1980, 2090, 2178, 2299, 2420, 2508, 2524, 3135, 3155, 3420, 3630, 3762, 3786, 4180, 4356, 4598, 5445, 5679, 6270, 6310, 6897, 6941, 7260, 7524, 7572, 9196, 9405, 9465, 10890, 11358, 11495, 11989, 12540, 12620, 13794, 13882, 18810, 18930, 20691, 20823, 21780, 22716, 22990, 23978, 27588, 27764, 28395, 34485, 34705, 35967, 37620, 37860, 41382, 41646, 45980, 47956, 56790, 59945, 62469, 68970, 69410, 71934, 76351, 82764, 83292, 103455, 104115, 107901, 113580, 119890, 124938, 131879, 137940, 138820, 143868, 152702, 179835, 206910, 208230, 215802, 229053, 239780, 249876, 263758, 305404, 312345, 359670, 381755, 395637, 413820, 416460, 431604, 458106, 527516, 539505, 624690, 659395, 687159, 719340, 763510, 791274, 916212, 1079010, 1145265, 1186911, 1249380, 1318790, 1374318, 1450669, 1527020, 1582548, 1978185, 2158020, 2290530, 2373822, 2637580, 2748636, 2901338, 3435795, 3956370, 4352007, 4581060, 4747644, 5802676, 5934555, 6871590, 7253345, 7912740, 8704014, 11869110, 13056021, 13743180, 14506690, 17408028, 21760035, 23738220, 26112042, 29013380, 43520070, 52224084, 65280105, 87040140, 130560210, 261120420]

約数ペア:

[(1, 261120420), (2, 130560210), (3, 87040140), (4, 65280105), (5, 52224084), (6, 43520070), (9, 29013380), (10, 26112042), (11, 23738220), (12, 21760035), (15, 17408028), (18, 14506690), (19, 13743180), (20, 13056021), (22, 11869110), (30, 8704014), (33, 7912740), (36, 7253345), (38, 6871590), (44, 5934555), (45, 5802676), (55, 4747644), (57, 4581060), (60, 4352007), (66, 3956370), (76, 3435795), (90, 2901338), (95, 2748636), (99, 2637580), (110, 2373822), (114, 2290530), (121, 2158020), (132, 1978185), (165, 1582548), (171, 1527020), (180, 1450669), (190, 1374318), (198, 1318790), (209, 1249380), (220, 1186911), (228, 1145265), (242, 1079010), (285, 916212), (330, 791274), (342, 763510), (363, 719340), (380, 687159), (396, 659395), (418, 624690), (484, 539505), (495, 527516), (570, 458106), (605, 431604), (627, 416460), (631, 413820), (660, 395637), (684, 381755), (726, 359670), (836, 312345), (855, 305404), (990, 263758), (1045, 249876), (1089, 239780), (1140, 229053), (1210, 215802), (1254, 208230), (1262, 206910), (1452, 179835), (1710, 152702), (1815, 143868), (1881, 138820), (1893, 137940), (1980, 131879), (2090, 124938), (2178, 119890), (2299, 113580), (2420, 107901), (2508, 104115), (2524, 103455), (3135, 83292), (3155, 82764), (3420, 76351), (3630, 71934), (3762, 69410), (3786, 68970), (4180, 62469), (4356, 59945), (4598, 56790), (5445, 47956), (5679, 45980), (6270, 41646), (6310, 41382), (6897, 37860), (6941, 37620), (7260, 35967), (7524, 34705), (7572, 34485), (9196, 28395), (9405, 27764), (9465, 27588), (10890, 23978), (11358, 22990), (11495, 22716), (11989, 21780), (12540, 20823), (12620, 20691), (13794, 18930), (13882, 18810)]