21435340

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1877}}^1$

素因数の和:2457

約数の個数: 24

約数和(自身を含む): 45117072

約数和(自身を除く): 23681732

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 1877, 2284, 2855, 3754, 5710, 7508, 9385, 11420, 18770, 37540, 1071767, 2143534, 4287068, 5358835, 10717670, 21435340]

約数ペア:

[(1, 21435340), (2, 10717670), (4, 5358835), (5, 4287068), (10, 2143534), (20, 1071767), (571, 37540), (1142, 18770), (1877, 11420), (2284, 9385), (2855, 7508), (3754, 5710)]