31456520

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{5009}}^1$

素因数の和:5177

約数の個数: 32

約数和(自身を含む): 71242200

約数和(自身を除く): 39785680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 5009, 6280, 10018, 20036, 25045, 40072, 50090, 100180, 200360, 786413, 1572826, 3145652, 3932065, 6291304, 7864130, 15728260, 31456520]

約数ペア:

[(1, 31456520), (2, 15728260), (4, 7864130), (5, 6291304), (8, 3932065), (10, 3145652), (20, 1572826), (40, 786413), (157, 200360), (314, 100180), (628, 50090), (785, 40072), (1256, 25045), (1570, 20036), (3140, 10018), (5009, 6280)]