21684160

素因数分解:

$2^6\times 5^1\times {\mathrm{67763}}^1$

素因数の和:67780

約数の個数: 28

約数和(自身を含む): 51636168

約数和(自身を除く): 29952008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67763, 135526, 271052, 338815, 542104, 677630, 1084208, 1355260, 2168416, 2710520, 4336832, 5421040, 10842080, 21684160]

約数ペア:

[(1, 21684160), (2, 10842080), (4, 5421040), (5, 4336832), (8, 2710520), (10, 2168416), (16, 1355260), (20, 1084208), (32, 677630), (40, 542104), (64, 338815), (80, 271052), (160, 135526), (320, 67763)]