21671416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208379}}^1$

素因数の和:208398

約数の個数: 16

約数和(自身を含む): 43759800

約数和(自身を除く): 22088384

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208379, 416758, 833516, 1667032, 2708927, 5417854, 10835708, 21671416]

約数ペア:

[(1, 21671416), (2, 10835708), (4, 5417854), (8, 2708927), (13, 1667032), (26, 833516), (52, 416758), (104, 208379)]