20005377

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 33247872

約数和(自身を除く): 13242495

約数列:

[1, 3, 7, 21, 23, 49, 61, 69, 97, 147, 161, 183, 291, 427, 483, 679, 1127, 1281, 1403, 2037, 2231, 2989, 3381, 4209, 4753, 5917, 6693, 8967, 9821, 14259, 15617, 17751, 29463, 41419, 46851, 68747, 109319, 124257, 136091, 206241, 289933, 327957, 408273, 869799, 952637, 2857911, 6668459, 20005377]

約数ペア:

[(1, 20005377), (3, 6668459), (7, 2857911), (21, 952637), (23, 869799), (49, 408273), (61, 327957), (69, 289933), (97, 206241), (147, 136091), (161, 124257), (183, 109319), (291, 68747), (427, 46851), (483, 41419), (679, 29463), (1127, 17751), (1281, 15617), (1403, 14259), (2037, 9821), (2231, 8967), (2989, 6693), (3381, 5917), (4209, 4753)]