21728750

素因数分解:

$2^1\times 5^4\times {\mathrm{17383}}^1$

素因数の和:17405

約数の個数: 20

約数和(自身を含む): 40730712

約数和(自身を除く): 19001962

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 17383, 34766, 86915, 173830, 434575, 869150, 2172875, 4345750, 10864375, 21728750]

約数ペア:

[(1, 21728750), (2, 10864375), (5, 4345750), (10, 2172875), (25, 869150), (50, 434575), (125, 173830), (250, 86915), (625, 34766), (1250, 17383)]