21481867

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{1123}}^1$

素因数の和:1218

約数の個数: 16

約数和(自身を含む): 24602112

約数和(自身を除く): 3120245

約数列:

[1, 11, 37, 47, 407, 517, 1123, 1739, 12353, 19129, 41551, 52781, 457061, 580591, 1952897, 21481867]

約数ペア:

[(1, 21481867), (11, 1952897), (37, 580591), (47, 457061), (407, 52781), (517, 41551), (1123, 19129), (1739, 12353)]