19517421

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{7681}}^1$

素因数の和:7713

約数の個数: 24

約数和(自身を含む): 32694592

約数和(自身を除く): 13177171

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 7681, 23043, 53767, 84491, 161301, 253473, 591437, 929401, 1774311, 2788203, 6505807, 19517421]

約数ペア:

[(1, 19517421), (3, 6505807), (7, 2788203), (11, 1774311), (21, 929401), (33, 591437), (77, 253473), (121, 161301), (231, 84491), (363, 53767), (847, 23043), (2541, 7681)]