31398520

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{7621}}^1$

素因数の和:7735

約数の個数: 32

約数和(自身を含む): 71341920

約数和(自身を除く): 39943400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 7621, 15242, 30484, 38105, 60968, 76210, 152420, 304840, 784963, 1569926, 3139852, 3924815, 6279704, 7849630, 15699260, 31398520]

約数ペア:

[(1, 31398520), (2, 15699260), (4, 7849630), (5, 6279704), (8, 3924815), (10, 3139852), (20, 1569926), (40, 784963), (103, 304840), (206, 152420), (412, 76210), (515, 60968), (824, 38105), (1030, 30484), (2060, 15242), (4120, 7621)]