19917567

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{433}}^1$

素因数の和:727

約数の個数: 24

約数和(自身を含む): 30466800

約数和(自身を除く): 10549233

約数列:

[1, 3, 9, 19, 57, 171, 269, 433, 807, 1299, 2421, 3897, 5111, 8227, 15333, 24681, 45999, 74043, 116477, 349431, 1048293, 2213063, 6639189, 19917567]

約数ペア:

[(1, 19917567), (3, 6639189), (9, 2213063), (19, 1048293), (57, 349431), (171, 116477), (269, 74043), (433, 45999), (807, 24681), (1299, 15333), (2421, 8227), (3897, 5111)]