21647216

素因数分解:

$2^4\times {\mathrm{419}}^1\times {\mathrm{3229}}^1$

素因数の和:3656

約数の個数: 20

約数和(自身を含む): 42054600

約数和(自身を除く): 20407384

約数列:

[1, 2, 4, 8, 16, 419, 838, 1676, 3229, 3352, 6458, 6704, 12916, 25832, 51664, 1352951, 2705902, 5411804, 10823608, 21647216]

約数ペア:

[(1, 21647216), (2, 10823608), (4, 5411804), (8, 2705902), (16, 1352951), (419, 51664), (838, 25832), (1676, 12916), (3229, 6704), (3352, 6458)]