21838115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19763}}^1$

素因数の和:19798

約数の個数: 16

約数和(自身を含む): 29883168

約数和(自身を除く): 8045053

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 19763, 98815, 256919, 335971, 1284595, 1679855, 4367623, 21838115]

約数ペア:

[(1, 21838115), (5, 4367623), (13, 1679855), (17, 1284595), (65, 335971), (85, 256919), (221, 98815), (1105, 19763)]