64254280

素因数分解:

$2^3\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1811}}^1$

素因数の和:2709

約数の個数: 32

約数和(自身を含む): 144815040

約数和(自身を除く): 80560760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 887, 1774, 1811, 3548, 3622, 4435, 7096, 7244, 8870, 9055, 14488, 17740, 18110, 35480, 36220, 72440, 1606357, 3212714, 6425428, 8031785, 12850856, 16063570, 32127140, 64254280]

約数ペア:

[(1, 64254280), (2, 32127140), (4, 16063570), (5, 12850856), (8, 8031785), (10, 6425428), (20, 3212714), (40, 1606357), (887, 72440), (1774, 36220), (1811, 35480), (3548, 18110), (3622, 17740), (4435, 14488), (7096, 9055), (7244, 8870)]