21386481

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{8377}}^1$

素因数の和:8440

約数の個数: 16

約数和(自身を含む): 30562944

約数和(自身を除く): 9176463

約数列:

[1, 3, 23, 37, 69, 111, 851, 2553, 8377, 25131, 192671, 309949, 578013, 929847, 7128827, 21386481]

約数ペア:

[(1, 21386481), (3, 7128827), (23, 929847), (37, 578013), (69, 309949), (111, 192671), (851, 25131), (2553, 8377)]