21901850

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4337}}^1$

素因数の和:4450

約数の個数: 24

約数和(自身を含む): 41150268

約数和(自身を除く): 19248418

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 1010, 2525, 4337, 5050, 8674, 21685, 43370, 108425, 216850, 438037, 876074, 2190185, 4380370, 10950925, 21901850]

約数ペア:

[(1, 21901850), (2, 10950925), (5, 4380370), (10, 2190185), (25, 876074), (50, 438037), (101, 216850), (202, 108425), (505, 43370), (1010, 21685), (2525, 8674), (4337, 5050)]