21321140

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1867}}^1$

素因数の和:2447

約数の個数: 24

約数和(自身を含む): 44876832

約数和(自身を除く): 23555692

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1867, 2284, 2855, 3734, 5710, 7468, 9335, 11420, 18670, 37340, 1066057, 2132114, 4264228, 5330285, 10660570, 21321140]

約数ペア:

[(1, 21321140), (2, 10660570), (4, 5330285), (5, 4264228), (10, 2132114), (20, 1066057), (571, 37340), (1142, 18670), (1867, 11420), (2284, 9335), (2855, 7468), (3734, 5710)]