64697780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{887}}^1$

素因数の和:1424

約数の個数: 48

約数和(自身を含む): 155748096

約数和(自身を除く): 91050316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 521, 887, 1042, 1774, 2084, 2605, 3548, 3647, 4435, 5210, 6209, 7294, 8870, 10420, 12418, 14588, 17740, 18235, 24836, 31045, 36470, 62090, 72940, 124180, 462127, 924254, 1848508, 2310635, 3234889, 4621270, 6469778, 9242540, 12939556, 16174445, 32348890, 64697780]

約数ペア:

[(1, 64697780), (2, 32348890), (4, 16174445), (5, 12939556), (7, 9242540), (10, 6469778), (14, 4621270), (20, 3234889), (28, 2310635), (35, 1848508), (70, 924254), (140, 462127), (521, 124180), (887, 72940), (1042, 62090), (1774, 36470), (2084, 31045), (2605, 24836), (3548, 18235), (3647, 17740), (4435, 14588), (5210, 12418), (6209, 10420), (7294, 8870)]