18615987

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 30820608

約数和(自身を除く): 12204621

約数列:

[1, 3, 9, 13, 27, 39, 71, 81, 83, 117, 213, 243, 249, 351, 639, 747, 923, 1053, 1079, 1917, 2241, 2769, 3159, 3237, 5751, 5893, 6723, 8307, 9711, 17253, 17679, 20169, 24921, 29133, 53037, 74763, 76609, 87399, 159111, 224289, 229827, 262197, 477333, 689481, 1431999, 2068443, 6205329, 18615987]

約数ペア:

[(1, 18615987), (3, 6205329), (9, 2068443), (13, 1431999), (27, 689481), (39, 477333), (71, 262197), (81, 229827), (83, 224289), (117, 159111), (213, 87399), (243, 76609), (249, 74763), (351, 53037), (639, 29133), (747, 24921), (923, 20169), (1053, 17679), (1079, 17253), (1917, 9711), (2241, 8307), (2769, 6723), (3159, 5893), (3237, 5751)]