19825585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9839}}^1$

素因数の和:9888

約数の個数: 16

約数和(自身を含む): 26449920

約数和(自身を除く): 6624335

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 9839, 49195, 127907, 305009, 639535, 1525045, 3965117, 19825585]

約数ペア:

[(1, 19825585), (5, 3965117), (13, 1525045), (31, 639535), (65, 305009), (155, 127907), (403, 49195), (2015, 9839)]