40394540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19609}}^1$

素因数の和:19721

約数の個数: 24

約数和(自身を含む): 85656480

約数和(自身を除く): 45261940

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 19609, 39218, 78436, 98045, 196090, 392180, 2019727, 4039454, 8078908, 10098635, 20197270, 40394540]

約数ペア:

[(1, 40394540), (2, 20197270), (4, 10098635), (5, 8078908), (10, 4039454), (20, 2019727), (103, 392180), (206, 196090), (412, 98045), (515, 78436), (1030, 39218), (2060, 19609)]