257481460

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{124991}}^1$

素因数の和:125103

約数の個数: 24

約数和(自身を含む): 545965056

約数和(自身を除く): 288483596

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 124991, 249982, 499964, 624955, 1249910, 2499820, 12874073, 25748146, 51496292, 64370365, 128740730, 257481460]

約数ペア:

[(1, 257481460), (2, 128740730), (4, 64370365), (5, 51496292), (10, 25748146), (20, 12874073), (103, 2499820), (206, 1249910), (412, 624955), (515, 499964), (1030, 249982), (2060, 124991)]