21088318

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1\times {\mathrm{647}}^1$

素因数の和:1071

約数の個数: 16

約数和(自身を含む): 32503680

約数和(自身を除く): 11415362

約数列:

[1, 2, 43, 86, 379, 647, 758, 1294, 16297, 27821, 32594, 55642, 245213, 490426, 10544159, 21088318]

約数ペア:

[(1, 21088318), (2, 10544159), (43, 490426), (86, 245213), (379, 55642), (647, 32594), (758, 27821), (1294, 16297)]