30707740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{521}}^1$

素因数の和:958

約数の個数: 48

約数和(自身を含む): 74015424

約数和(自身を除く): 43307684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 421, 521, 842, 1042, 1684, 2084, 2105, 2605, 2947, 3647, 4210, 5210, 5894, 7294, 8420, 10420, 11788, 14588, 14735, 18235, 29470, 36470, 58940, 72940, 219341, 438682, 877364, 1096705, 1535387, 2193410, 3070774, 4386820, 6141548, 7676935, 15353870, 30707740]

約数ペア:

[(1, 30707740), (2, 15353870), (4, 7676935), (5, 6141548), (7, 4386820), (10, 3070774), (14, 2193410), (20, 1535387), (28, 1096705), (35, 877364), (70, 438682), (140, 219341), (421, 72940), (521, 58940), (842, 36470), (1042, 29470), (1684, 18235), (2084, 14735), (2105, 14588), (2605, 11788), (2947, 10420), (3647, 8420), (4210, 7294), (5210, 5894)]