21038312

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{20707}}^1$

素因数の和:20840

約数の個数: 16

約数和(自身を含む): 39759360

約数和(自身を除く): 18721048

約数列:

[1, 2, 4, 8, 127, 254, 508, 1016, 20707, 41414, 82828, 165656, 2629789, 5259578, 10519156, 21038312]

約数ペア:

[(1, 21038312), (2, 10519156), (4, 5259578), (8, 2629789), (127, 165656), (254, 82828), (508, 41414), (1016, 20707)]