20628355

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{709}}^1$

素因数の和:771

約数の個数: 24

約数和(自身を含む): 28269360

約数和(自身を除く): 7641005

約数列:

[1, 5, 11, 23, 55, 115, 253, 529, 709, 1265, 2645, 3545, 5819, 7799, 16307, 29095, 38995, 81535, 179377, 375061, 896885, 1875305, 4125671, 20628355]

約数ペア:

[(1, 20628355), (5, 4125671), (11, 1875305), (23, 896885), (55, 375061), (115, 179377), (253, 81535), (529, 38995), (709, 29095), (1265, 16307), (2645, 7799), (3545, 5819)]