21156814570

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72954533}}^1$

素因数の和:72954569

約数の個数: 16

約数和(自身を含む): 39395448360

約数和(自身を除く): 18238633790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72954533, 145909066, 364772665, 729545330, 2115681457, 4231362914, 10578407285, 21156814570]

約数ペア:

[(1, 21156814570), (2, 10578407285), (5, 4231362914), (10, 2115681457), (29, 729545330), (58, 364772665), (145, 145909066), (290, 72954533)]