15621385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 21796992

約数和(自身を除く): 6175607

約数列:

[1, 5, 13, 17, 65, 67, 85, 211, 221, 335, 871, 1055, 1105, 1139, 2743, 3587, 4355, 5695, 13715, 14137, 14807, 17935, 46631, 70685, 74035, 183781, 233155, 240329, 918905, 1201645, 3124277, 15621385]

約数ペア:

[(1, 15621385), (5, 3124277), (13, 1201645), (17, 918905), (65, 240329), (67, 233155), (85, 183781), (211, 74035), (221, 70685), (335, 46631), (871, 17935), (1055, 14807), (1105, 14137), (1139, 13715), (2743, 5695), (3587, 4355)]