21172195

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{229}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 28532880

約数和(自身を除く): 7360685

約数列:

[1, 5, 11, 41, 55, 205, 229, 451, 1145, 1681, 2255, 2519, 8405, 9389, 12595, 18491, 46945, 92455, 103279, 384949, 516395, 1924745, 4234439, 21172195]

約数ペア:

[(1, 21172195), (5, 4234439), (11, 1924745), (41, 516395), (55, 384949), (205, 103279), (229, 92455), (451, 46945), (1145, 18491), (1681, 12595), (2255, 9389), (2519, 8405)]