64962820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249857}}^1$

素因数の和:249879

約数の個数: 24

約数和(自身を含む): 146916504

約数和(自身を除く): 81953684

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249857, 499714, 999428, 1249285, 2498570, 3248141, 4997140, 6496282, 12992564, 16240705, 32481410, 64962820]

約数ペア:

[(1, 64962820), (2, 32481410), (4, 16240705), (5, 12992564), (10, 6496282), (13, 4997140), (20, 3248141), (26, 2498570), (52, 1249285), (65, 999428), (130, 499714), (260, 249857)]