20165968

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29311}}^1$

素因数の和:29362

約数の個数: 20

約数和(自身を含む): 39981568

約数和(自身を除く): 19815600

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29311, 58622, 117244, 234488, 468976, 1260373, 2520746, 5041492, 10082984, 20165968]

約数ペア:

[(1, 20165968), (2, 10082984), (4, 5041492), (8, 2520746), (16, 1260373), (43, 468976), (86, 234488), (172, 117244), (344, 58622), (688, 29311)]