18240820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{70157}}^1$

素因数の和:70179

約数の個数: 24

約数和(自身を含む): 41252904

約数和(自身を除く): 23012084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 70157, 140314, 280628, 350785, 701570, 912041, 1403140, 1824082, 3648164, 4560205, 9120410, 18240820]

約数ペア:

[(1, 18240820), (2, 9120410), (4, 4560205), (5, 3648164), (10, 1824082), (13, 1403140), (20, 912041), (26, 701570), (52, 350785), (65, 280628), (130, 140314), (260, 70157)]