21855009

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{557}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 11892831

約数列:

[1, 3, 11, 29, 33, 41, 87, 123, 319, 451, 557, 957, 1189, 1353, 1671, 3567, 6127, 13079, 16153, 18381, 22837, 39237, 48459, 68511, 177683, 251207, 533049, 662273, 753621, 1986819, 7285003, 21855009]

約数ペア:

[(1, 21855009), (3, 7285003), (11, 1986819), (29, 753621), (33, 662273), (41, 533049), (87, 251207), (123, 177683), (319, 68511), (451, 48459), (557, 39237), (957, 22837), (1189, 18381), (1353, 16153), (1671, 13079), (3567, 6127)]