20913460

素因数分解:

$2^2\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1531}}^1$

素因数の和:2223

約数の個数: 24

約数和(自身を含む): 44011296

約数和(自身を除く): 23097836

約数列:

[1, 2, 4, 5, 10, 20, 683, 1366, 1531, 2732, 3062, 3415, 6124, 6830, 7655, 13660, 15310, 30620, 1045673, 2091346, 4182692, 5228365, 10456730, 20913460]

約数ペア:

[(1, 20913460), (2, 10456730), (4, 5228365), (5, 4182692), (10, 2091346), (20, 1045673), (683, 30620), (1366, 15310), (1531, 13660), (2732, 7655), (3062, 6830), (3415, 6124)]