64999580

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{24809}}^1$

素因数の和:24949

約数の個数: 24

約数和(自身を含む): 137546640

約数和(自身を除く): 72547060

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 24809, 49618, 99236, 124045, 248090, 496180, 3249979, 6499958, 12999916, 16249895, 32499790, 64999580]

約数ペア:

[(1, 64999580), (2, 32499790), (4, 16249895), (5, 12999916), (10, 6499958), (20, 3249979), (131, 496180), (262, 248090), (524, 124045), (655, 99236), (1310, 49618), (2620, 24809)]