21000969824

素因数分解:

$2^5\times {\mathrm{659}}^1\times {\mathrm{821}}^1\times {\mathrm{1213}}^1$

素因数の和:2703

約数の個数: 48

約数和(自身を含む): 41493014640

約数和(自身を除く): 20492044816

約数列:

[1, 2, 4, 8, 16, 32, 659, 821, 1213, 1318, 1642, 2426, 2636, 3284, 4852, 5272, 6568, 9704, 10544, 13136, 19408, 21088, 26272, 38816, 541039, 799367, 995873, 1082078, 1598734, 1991746, 2164156, 3197468, 3983492, 4328312, 6394936, 7966984, 8656624, 12789872, 15933968, 17313248, 25579744, 31867936, 656280307, 1312560614, 2625121228, 5250242456, 10500484912, 21000969824]

約数ペア:

[(1, 21000969824), (2, 10500484912), (4, 5250242456), (8, 2625121228), (16, 1312560614), (32, 656280307), (659, 31867936), (821, 25579744), (1213, 17313248), (1318, 15933968), (1642, 12789872), (2426, 8656624), (2636, 7966984), (3284, 6394936), (4852, 4328312), (5272, 3983492), (6568, 3197468), (9704, 2164156), (10544, 1991746), (13136, 1598734), (19408, 1082078), (21088, 995873), (26272, 799367), (38816, 541039)]