21783421

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{503}}^1$

素因数の和:672

約数の個数: 16

約数和(自身を含む): 24772608

約数和(自身を除く): 2989187

約数列:

[1, 11, 31, 127, 341, 503, 1397, 3937, 5533, 15593, 43307, 63881, 171523, 702691, 1980311, 21783421]

約数ペア:

[(1, 21783421), (11, 1980311), (31, 702691), (127, 171523), (341, 63881), (503, 43307), (1397, 15593), (3937, 5533)]