18779103

素因数分解:

$3^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{439}}^1$

素因数の和:556

約数の個数: 36

約数和(自身を含む): 31951920

約数和(自身を除く): 13172817

約数列:

[1, 3, 7, 9, 21, 49, 63, 97, 147, 291, 439, 441, 679, 873, 1317, 2037, 3073, 3951, 4753, 6111, 9219, 14259, 21511, 27657, 42583, 42777, 64533, 127749, 193599, 298081, 383247, 894243, 2086567, 2682729, 6259701, 18779103]

約数ペア:

[(1, 18779103), (3, 6259701), (7, 2682729), (9, 2086567), (21, 894243), (49, 383247), (63, 298081), (97, 193599), (147, 127749), (291, 64533), (439, 42777), (441, 42583), (679, 27657), (873, 21511), (1317, 14259), (2037, 9219), (3073, 6111), (3951, 4753)]