478870340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{3691}}^1$

素因数の和:4212

約数の個数: 48

約数和(自身を含む): 1085448000

約数和(自身を除く): 606577660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 499, 998, 1996, 2495, 3691, 4990, 6487, 7382, 9980, 12974, 14764, 18455, 25948, 32435, 36910, 47983, 64870, 73820, 95966, 129740, 191932, 239915, 479830, 959660, 1841809, 3683618, 7367236, 9209045, 18418090, 23943517, 36836180, 47887034, 95774068, 119717585, 239435170, 478870340]

約数ペア:

[(1, 478870340), (2, 239435170), (4, 119717585), (5, 95774068), (10, 47887034), (13, 36836180), (20, 23943517), (26, 18418090), (52, 9209045), (65, 7367236), (130, 3683618), (260, 1841809), (499, 959660), (998, 479830), (1996, 239915), (2495, 191932), (3691, 129740), (4990, 95966), (6487, 73820), (7382, 64870), (9980, 47983), (12974, 36910), (14764, 32435), (18455, 25948)]