20921109

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{547}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 32616960

約数和(自身を除く): 11695851

約数列:

[1, 3, 11, 19, 33, 57, 61, 183, 209, 547, 627, 671, 1159, 1641, 2013, 3477, 6017, 10393, 12749, 18051, 31179, 33367, 38247, 100101, 114323, 342969, 367037, 633973, 1101111, 1901919, 6973703, 20921109]

約数ペア:

[(1, 20921109), (3, 6973703), (11, 1901919), (19, 1101111), (33, 633973), (57, 367037), (61, 342969), (183, 114323), (209, 100101), (547, 38247), (627, 33367), (671, 31179), (1159, 18051), (1641, 12749), (2013, 10393), (3477, 6017)]