20963880

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:133

約数の個数: 256

約数和(自身を含む): 82944000

約数和(自身を除く): 61980120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 47, 54, 56, 59, 60, 63, 70, 72, 84, 90, 94, 105, 108, 118, 120, 126, 135, 140, 141, 168, 177, 180, 188, 189, 210, 216, 235, 236, 252, 270, 280, 282, 295, 315, 329, 354, 360, 376, 378, 413, 420, 423, 470, 472, 504, 531, 540, 564, 590, 630, 658, 705, 708, 756, 826, 840, 846, 885, 940, 945, 987, 1062, 1080, 1128, 1180, 1239, 1260, 1269, 1316, 1410, 1416, 1512, 1593, 1645, 1652, 1692, 1770, 1880, 1890, 1974, 2065, 2115, 2124, 2360, 2478, 2520, 2538, 2632, 2655, 2773, 2820, 2961, 3186, 3290, 3304, 3384, 3540, 3717, 3780, 3948, 4130, 4230, 4248, 4935, 4956, 5076, 5310, 5546, 5640, 5922, 6195, 6345, 6372, 6580, 7080, 7434, 7560, 7896, 7965, 8260, 8319, 8460, 8883, 9870, 9912, 10152, 10620, 11092, 11151, 11844, 12390, 12690, 12744, 13160, 13865, 14805, 14868, 15930, 16520, 16638, 16920, 17766, 18585, 19411, 19740, 21240, 22184, 22302, 23688, 24780, 24957, 25380, 27730, 29610, 29736, 31860, 33276, 35532, 37170, 38822, 39480, 41595, 44415, 44604, 49560, 49914, 50760, 55460, 55755, 58233, 59220, 63720, 66552, 71064, 74340, 74871, 77644, 83190, 88830, 89208, 97055, 99828, 110920, 111510, 116466, 118440, 124785, 148680, 149742, 155288, 166380, 174699, 177660, 194110, 199656, 223020, 232932, 249570, 291165, 299484, 332760, 349398, 355320, 374355, 388220, 446040, 465864, 499140, 524097, 582330, 598968, 698796, 748710, 776440, 873495, 998280, 1048194, 1164660, 1397592, 1497420, 1746990, 2096388, 2329320, 2620485, 2994840, 3493980, 4192776, 5240970, 6987960, 10481940, 20963880]

約数ペア:

[(1, 20963880), (2, 10481940), (3, 6987960), (4, 5240970), (5, 4192776), (6, 3493980), (7, 2994840), (8, 2620485), (9, 2329320), (10, 2096388), (12, 1746990), (14, 1497420), (15, 1397592), (18, 1164660), (20, 1048194), (21, 998280), (24, 873495), (27, 776440), (28, 748710), (30, 698796), (35, 598968), (36, 582330), (40, 524097), (42, 499140), (45, 465864), (47, 446040), (54, 388220), (56, 374355), (59, 355320), (60, 349398), (63, 332760), (70, 299484), (72, 291165), (84, 249570), (90, 232932), (94, 223020), (105, 199656), (108, 194110), (118, 177660), (120, 174699), (126, 166380), (135, 155288), (140, 149742), (141, 148680), (168, 124785), (177, 118440), (180, 116466), (188, 111510), (189, 110920), (210, 99828), (216, 97055), (235, 89208), (236, 88830), (252, 83190), (270, 77644), (280, 74871), (282, 74340), (295, 71064), (315, 66552), (329, 63720), (354, 59220), (360, 58233), (376, 55755), (378, 55460), (413, 50760), (420, 49914), (423, 49560), (470, 44604), (472, 44415), (504, 41595), (531, 39480), (540, 38822), (564, 37170), (590, 35532), (630, 33276), (658, 31860), (705, 29736), (708, 29610), (756, 27730), (826, 25380), (840, 24957), (846, 24780), (885, 23688), (940, 22302), (945, 22184), (987, 21240), (1062, 19740), (1080, 19411), (1128, 18585), (1180, 17766), (1239, 16920), (1260, 16638), (1269, 16520), (1316, 15930), (1410, 14868), (1416, 14805), (1512, 13865), (1593, 13160), (1645, 12744), (1652, 12690), (1692, 12390), (1770, 11844), (1880, 11151), (1890, 11092), (1974, 10620), (2065, 10152), (2115, 9912), (2124, 9870), (2360, 8883), (2478, 8460), (2520, 8319), (2538, 8260), (2632, 7965), (2655, 7896), (2773, 7560), (2820, 7434), (2961, 7080), (3186, 6580), (3290, 6372), (3304, 6345), (3384, 6195), (3540, 5922), (3717, 5640), (3780, 5546), (3948, 5310), (4130, 5076), (4230, 4956), (4248, 4935)]