68620820

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{5303}}^1$

素因数の和:5959

約数の個数: 24

約数和(自身を含む): 144353664

約数和(自身を除く): 75732844

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2588, 3235, 5303, 6470, 10606, 12940, 21212, 26515, 53030, 106060, 3431041, 6862082, 13724164, 17155205, 34310410, 68620820]

約数ペア:

[(1, 68620820), (2, 34310410), (4, 17155205), (5, 13724164), (10, 6862082), (20, 3431041), (647, 106060), (1294, 53030), (2588, 26515), (3235, 21212), (5303, 12940), (6470, 10606)]