21786020

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{1777}}^1$

素因数の和:2399

約数の個数: 24

約数和(自身を含む): 45851064

約数和(自身を除く): 24065044

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 1777, 2452, 3065, 3554, 6130, 7108, 8885, 12260, 17770, 35540, 1089301, 2178602, 4357204, 5446505, 10893010, 21786020]

約数ペア:

[(1, 21786020), (2, 10893010), (4, 5446505), (5, 4357204), (10, 2178602), (20, 1089301), (613, 35540), (1226, 17770), (1777, 12260), (2452, 8885), (3065, 7108), (3554, 6130)]