20577560

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3701}}^1$

素因数の和:3851

約数の個数: 32

約数和(自身を含む): 46645200

約数和(自身を除く): 26067640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3701, 5560, 7402, 14804, 18505, 29608, 37010, 74020, 148040, 514439, 1028878, 2057756, 2572195, 4115512, 5144390, 10288780, 20577560]

約数ペア:

[(1, 20577560), (2, 10288780), (4, 5144390), (5, 4115512), (8, 2572195), (10, 2057756), (20, 1028878), (40, 514439), (139, 148040), (278, 74020), (556, 37010), (695, 29608), (1112, 18505), (1390, 14804), (2780, 7402), (3701, 5560)]