20495380

素因数分解:

$2^2\times 5^1\times {\mathrm{569}}^1\times {\mathrm{1801}}^1$

素因数の和:2379

約数の個数: 24

約数和(自身を含む): 43139880

約数和(自身を除く): 22644500

約数列:

[1, 2, 4, 5, 10, 20, 569, 1138, 1801, 2276, 2845, 3602, 5690, 7204, 9005, 11380, 18010, 36020, 1024769, 2049538, 4099076, 5123845, 10247690, 20495380]

約数ペア:

[(1, 20495380), (2, 10247690), (4, 5123845), (5, 4099076), (10, 2049538), (20, 1024769), (569, 36020), (1138, 18010), (1801, 11380), (2276, 9005), (2845, 7204), (3602, 5690)]