28201660

素因数分解:

$2^2\times 5^1\times {\mathrm{947}}^1\times {\mathrm{1489}}^1$

素因数の和:2445

約数の個数: 24

約数和(自身を含む): 59325840

約数和(自身を除く): 31124180

約数列:

[1, 2, 4, 5, 10, 20, 947, 1489, 1894, 2978, 3788, 4735, 5956, 7445, 9470, 14890, 18940, 29780, 1410083, 2820166, 5640332, 7050415, 14100830, 28201660]

約数ペア:

[(1, 28201660), (2, 14100830), (4, 7050415), (5, 5640332), (10, 2820166), (20, 1410083), (947, 29780), (1489, 18940), (1894, 14890), (2978, 9470), (3788, 7445), (4735, 5956)]