21161620

素因数分解:

$2^2\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1201}}^1$

素因数の和:2091

約数の個数: 24

約数和(自身を含む): 44526888

約数和(自身を除く): 23365268

約数列:

[1, 2, 4, 5, 10, 20, 881, 1201, 1762, 2402, 3524, 4405, 4804, 6005, 8810, 12010, 17620, 24020, 1058081, 2116162, 4232324, 5290405, 10580810, 21161620]

約数ペア:

[(1, 21161620), (2, 10580810), (4, 5290405), (5, 4232324), (10, 2116162), (20, 1058081), (881, 24020), (1201, 17620), (1762, 12010), (2402, 8810), (3524, 6005), (4405, 4804)]