21886585

素因数分解:

$5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{569}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 30800520

約数和(自身を除く): 8913935

約数列:

[1, 5, 7, 35, 49, 157, 245, 569, 785, 1099, 2845, 3983, 5495, 7693, 19915, 27881, 38465, 89333, 139405, 446665, 625331, 3126655, 4377317, 21886585]

約数ペア:

[(1, 21886585), (5, 4377317), (7, 3126655), (35, 625331), (49, 446665), (157, 139405), (245, 89333), (569, 38465), (785, 27881), (1099, 19915), (2845, 7693), (3983, 5495)]