2780740

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{541}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 5873112

約数和(自身を除く): 3092372

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 541, 1028, 1082, 1285, 2164, 2570, 2705, 5140, 5410, 10820, 139037, 278074, 556148, 695185, 1390370, 2780740]

約数ペア:

[(1, 2780740), (2, 1390370), (4, 695185), (5, 556148), (10, 278074), (20, 139037), (257, 10820), (514, 5410), (541, 5140), (1028, 2705), (1082, 2570), (1285, 2164)]