21000978856

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{739}}^1\times {\mathrm{24841}}^1$

素因数の和:25610

約数の個数: 64

約数和(自身を含む): 46325361600

約数和(自身を除く): 25324382744

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 739, 1144, 1478, 2956, 5912, 8129, 9607, 16258, 19214, 24841, 32516, 38428, 49682, 65032, 76856, 99364, 105677, 198728, 211354, 273251, 322933, 422708, 546502, 645866, 845416, 1093004, 1291732, 2186008, 2583464, 3552263, 7104526, 14209052, 18357499, 28418104, 36714998, 73429996, 146859992, 201932489, 238647487, 403864978, 477294974, 807729956, 954589948, 1615459912, 1909179896, 2625122357, 5250244714, 10500489428, 21000978856]

約数ペア:

[(1, 21000978856), (2, 10500489428), (4, 5250244714), (8, 2625122357), (11, 1909179896), (13, 1615459912), (22, 954589948), (26, 807729956), (44, 477294974), (52, 403864978), (88, 238647487), (104, 201932489), (143, 146859992), (286, 73429996), (572, 36714998), (739, 28418104), (1144, 18357499), (1478, 14209052), (2956, 7104526), (5912, 3552263), (8129, 2583464), (9607, 2186008), (16258, 1291732), (19214, 1093004), (24841, 845416), (32516, 645866), (38428, 546502), (49682, 422708), (65032, 322933), (76856, 273251), (99364, 211354), (105677, 198728)]