18765999

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1439}}^1$

素因数の和:1481

約数の個数: 40

約数和(自身を含む): 33454080

約数和(自身を除く): 14688081

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 483, 567, 621, 1439, 1449, 1863, 4317, 4347, 10073, 12951, 13041, 30219, 33097, 38853, 90657, 99291, 116559, 231679, 271971, 297873, 695037, 815913, 893619, 2085111, 2680857, 6255333, 18765999]

約数ペア:

[(1, 18765999), (3, 6255333), (7, 2680857), (9, 2085111), (21, 893619), (23, 815913), (27, 695037), (63, 297873), (69, 271971), (81, 231679), (161, 116559), (189, 99291), (207, 90657), (483, 38853), (567, 33097), (621, 30219), (1439, 13041), (1449, 12951), (1863, 10073), (4317, 4347)]