20027120

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1801}}^1$

素因数の和:1953

約数の個数: 40

約数和(自身を含む): 46924080

約数和(自身を除く): 26896960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1801, 2224, 2780, 3602, 5560, 7204, 9005, 11120, 14408, 18010, 28816, 36020, 72040, 144080, 250339, 500678, 1001356, 1251695, 2002712, 2503390, 4005424, 5006780, 10013560, 20027120]

約数ペア:

[(1, 20027120), (2, 10013560), (4, 5006780), (5, 4005424), (8, 2503390), (10, 2002712), (16, 1251695), (20, 1001356), (40, 500678), (80, 250339), (139, 144080), (278, 72040), (556, 36020), (695, 28816), (1112, 18010), (1390, 14408), (1801, 11120), (2224, 9005), (2780, 7204), (3602, 5560)]