21809585

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20101}}^1$

素因数の和:20144

約数の個数: 16

約数和(自身を含む): 30876672

約数和(自身を除く): 9067087

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 20101, 100505, 140707, 623131, 703535, 3115655, 4361917, 21809585]

約数ペア:

[(1, 21809585), (5, 4361917), (7, 3115655), (31, 703535), (35, 623131), (155, 140707), (217, 100505), (1085, 20101)]