640212

素因数分解:

$2^2\times 3^1\times {\mathrm{31}}^1\times {\mathrm{1721}}^1$

素因数の和:1759

約数の個数: 24

約数和(自身を含む): 1542912

約数和(自身を除く): 902700

約数列:

[1, 2, 3, 4, 6, 12, 31, 62, 93, 124, 186, 372, 1721, 3442, 5163, 6884, 10326, 20652, 53351, 106702, 160053, 213404, 320106, 640212]

約数ペア:

[(1, 640212), (2, 320106), (3, 213404), (4, 160053), (6, 106702), (12, 53351), (31, 20652), (62, 10326), (93, 6884), (124, 5163), (186, 3442), (372, 1721)]