20765620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17021}}^1$

素因数の和:17091

約数の個数: 24

約数和(自身を含む): 44325288

約数和(自身を除く): 23559668

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17021, 34042, 68084, 85105, 170210, 340420, 1038281, 2076562, 4153124, 5191405, 10382810, 20765620]

約数ペア:

[(1, 20765620), (2, 10382810), (4, 5191405), (5, 4153124), (10, 2076562), (20, 1038281), (61, 340420), (122, 170210), (244, 85105), (305, 68084), (610, 34042), (1220, 17021)]