21437585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10639}}^1$

素因数の和:10688

約数の個数: 16

約数和(自身を含む): 28600320

約数和(自身を除く): 7162735

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10639, 53195, 138307, 329809, 691535, 1649045, 4287517, 21437585]

約数ペア:

[(1, 21437585), (5, 4287517), (13, 1649045), (31, 691535), (65, 329809), (155, 138307), (403, 53195), (2015, 10639)]