64646660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{248641}}^1$

素因数の和:248663

約数の個数: 24

約数和(自身を含む): 146201496

約数和(自身を除く): 81554836

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 248641, 497282, 994564, 1243205, 2486410, 3232333, 4972820, 6464666, 12929332, 16161665, 32323330, 64646660]

約数ペア:

[(1, 64646660), (2, 32323330), (4, 16161665), (5, 12929332), (10, 6464666), (13, 4972820), (20, 3232333), (26, 2486410), (52, 1243205), (65, 994564), (130, 497282), (260, 248641)]