428559980

素因数分解:

$2^2\times 5^1\times {\mathrm{1621}}^1\times {\mathrm{13219}}^1$

素因数の和:14849

約数の個数: 24

約数和(自身を含む): 900599280

約数和(自身を除く): 472039300

約数列:

[1, 2, 4, 5, 10, 20, 1621, 3242, 6484, 8105, 13219, 16210, 26438, 32420, 52876, 66095, 132190, 264380, 21427999, 42855998, 85711996, 107139995, 214279990, 428559980]

約数ペア:

[(1, 428559980), (2, 214279990), (4, 107139995), (5, 85711996), (10, 42855998), (20, 21427999), (1621, 264380), (3242, 132190), (6484, 66095), (8105, 52876), (13219, 32420), (16210, 26438)]