21576640

素因数分解:

$2^6\times 5^1\times {\mathrm{67427}}^1$

素因数の和:67444

約数の個数: 28

約数和(自身を含む): 51380136

約数和(自身を除く): 29803496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67427, 134854, 269708, 337135, 539416, 674270, 1078832, 1348540, 2157664, 2697080, 4315328, 5394160, 10788320, 21576640]

約数ペア:

[(1, 21576640), (2, 10788320), (4, 5394160), (5, 4315328), (8, 2697080), (10, 2157664), (16, 1348540), (20, 1078832), (32, 674270), (40, 539416), (64, 337135), (80, 269708), (160, 134854), (320, 67427)]