21100980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 96

約数和(自身を含む): 62375040

約数和(自身を除く): 41274060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 67, 87, 116, 134, 145, 174, 181, 201, 268, 290, 335, 348, 362, 402, 435, 543, 580, 670, 724, 804, 870, 905, 1005, 1086, 1340, 1740, 1810, 1943, 2010, 2172, 2715, 3620, 3886, 4020, 5249, 5430, 5829, 7772, 9715, 10498, 10860, 11658, 12127, 15747, 19430, 20996, 23316, 24254, 26245, 29145, 31494, 36381, 38860, 48508, 52490, 58290, 60635, 62988, 72762, 78735, 104980, 116580, 121270, 145524, 157470, 181905, 242540, 314940, 351683, 363810, 703366, 727620, 1055049, 1406732, 1758415, 2110098, 3516830, 4220196, 5275245, 7033660, 10550490, 21100980]

約数ペア:

[(1, 21100980), (2, 10550490), (3, 7033660), (4, 5275245), (5, 4220196), (6, 3516830), (10, 2110098), (12, 1758415), (15, 1406732), (20, 1055049), (29, 727620), (30, 703366), (58, 363810), (60, 351683), (67, 314940), (87, 242540), (116, 181905), (134, 157470), (145, 145524), (174, 121270), (181, 116580), (201, 104980), (268, 78735), (290, 72762), (335, 62988), (348, 60635), (362, 58290), (402, 52490), (435, 48508), (543, 38860), (580, 36381), (670, 31494), (724, 29145), (804, 26245), (870, 24254), (905, 23316), (1005, 20996), (1086, 19430), (1340, 15747), (1740, 12127), (1810, 11658), (1943, 10860), (2010, 10498), (2172, 9715), (2715, 7772), (3620, 5829), (3886, 5430), (4020, 5249)]