18881685

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3203}}^1$

素因数の和:3345

約数の個数: 24

約数和(自身を含む): 32988384

約数和(自身を除く): 14106699

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3203, 5895, 9609, 16015, 28827, 48045, 144135, 419593, 1258779, 2097965, 3776337, 6293895, 18881685]

約数ペア:

[(1, 18881685), (3, 6293895), (5, 3776337), (9, 2097965), (15, 1258779), (45, 419593), (131, 144135), (393, 48045), (655, 28827), (1179, 16015), (1965, 9609), (3203, 5895)]