21484881

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:318

約数の個数: 36

約数和(自身を含む): 34614580

約数和(自身を除く): 13129699

約数列:

[1, 3, 9, 11, 33, 99, 109, 121, 181, 327, 363, 543, 981, 1089, 1199, 1629, 1991, 3597, 5973, 10791, 13189, 17919, 19729, 21901, 39567, 59187, 65703, 118701, 177561, 197109, 217019, 651057, 1953171, 2387209, 7161627, 21484881]

約数ペア:

[(1, 21484881), (3, 7161627), (9, 2387209), (11, 1953171), (33, 651057), (99, 217019), (109, 197109), (121, 177561), (181, 118701), (327, 65703), (363, 59187), (543, 39567), (981, 21901), (1089, 19729), (1199, 17919), (1629, 13189), (1991, 10791), (3597, 5973)]