80452820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{1103}}^1$

素因数の和:1640

約数の個数: 48

約数和(自身を含む): 193632768

約数和(自身を除く): 113179948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 521, 1042, 1103, 2084, 2206, 2605, 3647, 4412, 5210, 5515, 7294, 7721, 10420, 11030, 14588, 15442, 18235, 22060, 30884, 36470, 38605, 72940, 77210, 154420, 574663, 1149326, 2298652, 2873315, 4022641, 5746630, 8045282, 11493260, 16090564, 20113205, 40226410, 80452820]

約数ペア:

[(1, 80452820), (2, 40226410), (4, 20113205), (5, 16090564), (7, 11493260), (10, 8045282), (14, 5746630), (20, 4022641), (28, 2873315), (35, 2298652), (70, 1149326), (140, 574663), (521, 154420), (1042, 77210), (1103, 72940), (2084, 38605), (2206, 36470), (2605, 30884), (3647, 22060), (4412, 18235), (5210, 15442), (5515, 14588), (7294, 11030), (7721, 10420)]