21364160

素因数分解:

$2^6\times 5^1\times {\mathrm{66763}}^1$

素因数の和:66780

約数の個数: 28

約数和(自身を含む): 50874168

約数和(自身を除く): 29510008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66763, 133526, 267052, 333815, 534104, 667630, 1068208, 1335260, 2136416, 2670520, 4272832, 5341040, 10682080, 21364160]

約数ペア:

[(1, 21364160), (2, 10682080), (4, 5341040), (5, 4272832), (8, 2670520), (10, 2136416), (16, 1335260), (20, 1068208), (32, 667630), (40, 534104), (64, 333815), (80, 267052), (160, 133526), (320, 66763)]