21971360

素因数分解:

$2^5\times 5^1\times {\mathrm{137321}}^1$

素因数の和:137336

約数の個数: 24

約数和(自身を含む): 51907716

約数和(自身を除く): 29936356

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 137321, 274642, 549284, 686605, 1098568, 1373210, 2197136, 2746420, 4394272, 5492840, 10985680, 21971360]

約数ペア:

[(1, 21971360), (2, 10985680), (4, 5492840), (5, 4394272), (8, 2746420), (10, 2197136), (16, 1373210), (20, 1098568), (32, 686605), (40, 549284), (80, 274642), (160, 137321)]