21060080

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4967}}^1$

素因数の和:5033

約数の個数: 40

約数和(自身を含む): 49898592

約数和(自身を除く): 28838512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4967, 9934, 19868, 24835, 39736, 49670, 79472, 99340, 198680, 263251, 397360, 526502, 1053004, 1316255, 2106008, 2632510, 4212016, 5265020, 10530040, 21060080]

約数ペア:

[(1, 21060080), (2, 10530040), (4, 5265020), (5, 4212016), (8, 2632510), (10, 2106008), (16, 1316255), (20, 1053004), (40, 526502), (53, 397360), (80, 263251), (106, 198680), (212, 99340), (265, 79472), (424, 49670), (530, 39736), (848, 24835), (1060, 19868), (2120, 9934), (4240, 4967)]