21125511

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1068

約数の個数: 36

約数和(自身を含む): 35340760

約数和(自身を除く): 14215249

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 121, 171, 209, 363, 627, 1021, 1089, 1881, 2299, 3063, 6897, 9189, 11231, 19399, 20691, 33693, 58197, 101079, 123541, 174591, 213389, 370623, 640167, 1111869, 1920501, 2347279, 7041837, 21125511]

約数ペア:

[(1, 21125511), (3, 7041837), (9, 2347279), (11, 1920501), (19, 1111869), (33, 640167), (57, 370623), (99, 213389), (121, 174591), (171, 123541), (209, 101079), (363, 58197), (627, 33693), (1021, 20691), (1089, 19399), (1881, 11231), (2299, 9189), (3063, 6897)]