21130902

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1026

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 31123818

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 31, 39, 54, 62, 78, 93, 117, 186, 234, 279, 351, 403, 558, 702, 806, 837, 971, 1209, 1674, 1942, 2418, 2913, 3627, 5826, 7254, 8739, 10881, 12623, 17478, 21762, 25246, 26217, 30101, 37869, 52434, 60202, 75738, 90303, 113607, 180606, 227214, 270909, 340821, 391313, 541818, 681642, 782626, 812727, 1173939, 1625454, 2347878, 3521817, 7043634, 10565451, 21130902]

約数ペア:

[(1, 21130902), (2, 10565451), (3, 7043634), (6, 3521817), (9, 2347878), (13, 1625454), (18, 1173939), (26, 812727), (27, 782626), (31, 681642), (39, 541818), (54, 391313), (62, 340821), (78, 270909), (93, 227214), (117, 180606), (186, 113607), (234, 90303), (279, 75738), (351, 60202), (403, 52434), (558, 37869), (702, 30101), (806, 26217), (837, 25246), (971, 21762), (1209, 17478), (1674, 12623), (1942, 10881), (2418, 8739), (2913, 7254), (3627, 5826)]