18211977

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:758

約数の個数: 36

約数和(自身を含む): 31148676

約数和(自身を除く): 12936699

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 147, 183, 427, 441, 549, 677, 1281, 2031, 2989, 3843, 4739, 6093, 8967, 14217, 26901, 33173, 41297, 42651, 99519, 123891, 289079, 298557, 371673, 867237, 2023553, 2601711, 6070659, 18211977]

約数ペア:

[(1, 18211977), (3, 6070659), (7, 2601711), (9, 2023553), (21, 867237), (49, 371673), (61, 298557), (63, 289079), (147, 123891), (183, 99519), (427, 42651), (441, 41297), (549, 33173), (677, 26901), (1281, 14217), (2031, 8967), (2989, 6093), (3843, 4739)]