21663831

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8669}}^1$

素因数の和:8703

約数の個数: 24

約数和(自身を含む): 35581680

約数和(自身を除く): 13917849

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8669, 26007, 60683, 147373, 182049, 424781, 442119, 1031611, 1274343, 3094833, 7221277, 21663831]

約数ペア:

[(1, 21663831), (3, 7221277), (7, 3094833), (17, 1274343), (21, 1031611), (49, 442119), (51, 424781), (119, 182049), (147, 147373), (357, 60683), (833, 26007), (2499, 8669)]