18990495

素因数分解:

$3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1063}}^1$

素因数の和:1471

約数の個数: 24

約数和(自身を含む): 33030816

約数和(自身を除く): 14040321

約数列:

[1, 3, 5, 9, 15, 45, 397, 1063, 1191, 1985, 3189, 3573, 5315, 5955, 9567, 15945, 17865, 47835, 422011, 1266033, 2110055, 3798099, 6330165, 18990495]

約数ペア:

[(1, 18990495), (3, 6330165), (5, 3798099), (9, 2110055), (15, 1266033), (45, 422011), (397, 47835), (1063, 17865), (1191, 15945), (1985, 9567), (3189, 5955), (3573, 5315)]