20778076

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{2609}}^1$

素因数の和:2805

約数の個数: 24

約数和(自身を含む): 39901680

約数和(自身を除く): 19123604

約数列:

[1, 2, 4, 11, 22, 44, 181, 362, 724, 1991, 2609, 3982, 5218, 7964, 10436, 28699, 57398, 114796, 472229, 944458, 1888916, 5194519, 10389038, 20778076]

約数ペア:

[(1, 20778076), (2, 10389038), (4, 5194519), (11, 1888916), (22, 944458), (44, 472229), (181, 114796), (362, 57398), (724, 28699), (1991, 10436), (2609, 7964), (3982, 5218)]