257017960

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{62383}}^1$

素因数の和:62497

約数の個数: 32

約数和(自身を含む): 583914240

約数和(自身を除く): 326896280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 62383, 124766, 249532, 311915, 499064, 623830, 1247660, 2495320, 6425449, 12850898, 25701796, 32127245, 51403592, 64254490, 128508980, 257017960]

約数ペア:

[(1, 257017960), (2, 128508980), (4, 64254490), (5, 51403592), (8, 32127245), (10, 25701796), (20, 12850898), (40, 6425449), (103, 2495320), (206, 1247660), (412, 623830), (515, 499064), (824, 311915), (1030, 249532), (2060, 124766), (4120, 62383)]