31645720

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{7681}}^1$

素因数の和:7795

約数の個数: 32

約数和(自身を含む): 71903520

約数和(自身を除く): 40257800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 7681, 15362, 30724, 38405, 61448, 76810, 153620, 307240, 791143, 1582286, 3164572, 3955715, 6329144, 7911430, 15822860, 31645720]

約数ペア:

[(1, 31645720), (2, 15822860), (4, 7911430), (5, 6329144), (8, 3955715), (10, 3164572), (20, 1582286), (40, 791143), (103, 307240), (206, 153620), (412, 76810), (515, 61448), (824, 38405), (1030, 30724), (2060, 15362), (4120, 7681)]