21364585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{16889}}^1$

素因数の和:16928

約数の個数: 16

約数和(自身を含む): 29185920

約数和(自身を除く): 7821335

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 16889, 84445, 185779, 388447, 928895, 1942235, 4272917, 21364585]

約数ペア:

[(1, 21364585), (5, 4272917), (11, 1942235), (23, 928895), (55, 388447), (115, 185779), (253, 84445), (1265, 16889)]