31421980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{10007}}^1$

素因数の和:10173

約数の個数: 24

約数和(自身を含む): 66413088

約数和(自身を除く): 34991108

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 10007, 20014, 40028, 50035, 100070, 200140, 1571099, 3142198, 6284396, 7855495, 15710990, 31421980]

約数ペア:

[(1, 31421980), (2, 15710990), (4, 7855495), (5, 6284396), (10, 3142198), (20, 1571099), (157, 200140), (314, 100070), (628, 50035), (785, 40028), (1570, 20014), (3140, 10007)]