20997186

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{71419}}^1$

素因数の和:71438

約数の個数: 24

約数和(自身を含む): 48851280

約数和(自身を除く): 27854094

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 71419, 142838, 214257, 428514, 499933, 999866, 1499799, 2999598, 3499531, 6999062, 10498593, 20997186]

約数ペア:

[(1, 20997186), (2, 10498593), (3, 6999062), (6, 3499531), (7, 2999598), (14, 1499799), (21, 999866), (42, 499933), (49, 428514), (98, 214257), (147, 142838), (294, 71419)]