31393971

素因数分解:

$3^2\times 7^1\times {\mathrm{547}}^1\times {\mathrm{911}}^1$

素因数の和:1471

約数の個数: 24

約数和(自身を含む): 51976704

約数和(自身を除く): 20582733

約数列:

[1, 3, 7, 9, 21, 63, 547, 911, 1641, 2733, 3829, 4923, 6377, 8199, 11487, 19131, 34461, 57393, 498317, 1494951, 3488219, 4484853, 10464657, 31393971]

約数ペア:

[(1, 31393971), (3, 10464657), (7, 4484853), (9, 3488219), (21, 1494951), (63, 498317), (547, 57393), (911, 34461), (1641, 19131), (2733, 11487), (3829, 8199), (4923, 6377)]