21885976

素因数分解:

$2^3\times 7^1\times {\mathrm{390821}}^1$

素因数の和:390834

約数の個数: 16

約数和(自身を含む): 46898640

約数和(自身を除く): 25012664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 390821, 781642, 1563284, 2735747, 3126568, 5471494, 10942988, 21885976]

約数ペア:

[(1, 21885976), (2, 10942988), (4, 5471494), (7, 3126568), (8, 2735747), (14, 1563284), (28, 781642), (56, 390821)]