21793881

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{4231}}^1$

素因数の和:4352

約数の個数: 16

約数和(自身を含む): 31079808

約数和(自身を除く): 9285927

約数列:

[1, 3, 17, 51, 101, 303, 1717, 4231, 5151, 12693, 71927, 215781, 427331, 1281993, 7264627, 21793881]

約数ペア:

[(1, 21793881), (3, 7264627), (17, 1281993), (51, 427331), (101, 215781), (303, 71927), (1717, 12693), (4231, 5151)]