7512820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 18240768

約数和(自身を除く): 10727948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 521, 721, 1030, 1042, 1442, 2060, 2084, 2605, 2884, 3605, 3647, 5210, 7210, 7294, 10420, 14420, 14588, 18235, 36470, 53663, 72940, 107326, 214652, 268315, 375641, 536630, 751282, 1073260, 1502564, 1878205, 3756410, 7512820]

約数ペア:

[(1, 7512820), (2, 3756410), (4, 1878205), (5, 1502564), (7, 1073260), (10, 751282), (14, 536630), (20, 375641), (28, 268315), (35, 214652), (70, 107326), (103, 72940), (140, 53663), (206, 36470), (412, 18235), (515, 14588), (521, 14420), (721, 10420), (1030, 7294), (1042, 7210), (1442, 5210), (2060, 3647), (2084, 3605), (2605, 2884)]