20918416

素因数分解:

$2^4\times {\mathrm{313}}^1\times {\mathrm{4177}}^1$

素因数の和:4498

約数の個数: 20

約数和(自身を含む): 40668652

約数和(自身を除く): 19750236

約数列:

[1, 2, 4, 8, 16, 313, 626, 1252, 2504, 4177, 5008, 8354, 16708, 33416, 66832, 1307401, 2614802, 5229604, 10459208, 20918416]

約数ペア:

[(1, 20918416), (2, 10459208), (4, 5229604), (8, 2614802), (16, 1307401), (313, 66832), (626, 33416), (1252, 16708), (2504, 8354), (4177, 5008)]