21015556

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{953}}^1$

素因数の和:1143

約数の個数: 24

約数和(自身を含む): 38064600

約数和(自身を除く): 17049044

約数列:

[1, 2, 4, 37, 74, 148, 149, 298, 596, 953, 1906, 3812, 5513, 11026, 22052, 35261, 70522, 141044, 141997, 283994, 567988, 5253889, 10507778, 21015556]

約数ペア:

[(1, 21015556), (2, 10507778), (4, 5253889), (37, 567988), (74, 283994), (148, 141997), (149, 141044), (298, 70522), (596, 35261), (953, 22052), (1906, 11026), (3812, 5513)]