280396520

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{12451}}^1$

素因数の和:13025

約数の個数: 32

約数和(自身を含む): 632063520

約数和(自身を除く): 351667000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 1126, 2252, 2815, 4504, 5630, 11260, 12451, 22520, 24902, 49804, 62255, 99608, 124510, 249020, 498040, 7009913, 14019826, 28039652, 35049565, 56079304, 70099130, 140198260, 280396520]

約数ペア:

[(1, 280396520), (2, 140198260), (4, 70099130), (5, 56079304), (8, 35049565), (10, 28039652), (20, 14019826), (40, 7009913), (563, 498040), (1126, 249020), (2252, 124510), (2815, 99608), (4504, 62255), (5630, 49804), (11260, 24902), (12451, 22520)]