81807420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{2617}}^1$

素因数の和:3150

約数の個数: 48

約数和(自身を含む): 229588128

約数和(自身を除く): 147780708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 521, 1042, 1563, 2084, 2605, 2617, 3126, 5210, 5234, 6252, 7815, 7851, 10420, 10468, 13085, 15630, 15702, 26170, 31260, 31404, 39255, 52340, 78510, 157020, 1363457, 2726914, 4090371, 5453828, 6817285, 8180742, 13634570, 16361484, 20451855, 27269140, 40903710, 81807420]

約数ペア:

[(1, 81807420), (2, 40903710), (3, 27269140), (4, 20451855), (5, 16361484), (6, 13634570), (10, 8180742), (12, 6817285), (15, 5453828), (20, 4090371), (30, 2726914), (60, 1363457), (521, 157020), (1042, 78510), (1563, 52340), (2084, 39255), (2605, 31404), (2617, 31260), (3126, 26170), (5210, 15702), (5234, 15630), (6252, 13085), (7815, 10468), (7851, 10420)]