21267160

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1481}}^1$

素因数の和:1851

約数の個数: 32

約数和(自身を含む): 48016800

約数和(自身を除く): 26749640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1436, 1481, 1795, 2872, 2962, 3590, 5924, 7180, 7405, 11848, 14360, 14810, 29620, 59240, 531679, 1063358, 2126716, 2658395, 4253432, 5316790, 10633580, 21267160]

約数ペア:

[(1, 21267160), (2, 10633580), (4, 5316790), (5, 4253432), (8, 2658395), (10, 2126716), (20, 1063358), (40, 531679), (359, 59240), (718, 29620), (1436, 14810), (1481, 14360), (1795, 11848), (2872, 7405), (2962, 7180), (3590, 5924)]