81621064

素因数分解:

$2^3\times 7^2\times {\mathrm{208217}}^1$

素因数の和:208237

約数の個数: 24

約数和(自身を含む): 178026390

約数和(自身を除く): 96405326

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 208217, 416434, 832868, 1457519, 1665736, 2915038, 5830076, 10202633, 11660152, 20405266, 40810532, 81621064]

約数ペア:

[(1, 81621064), (2, 40810532), (4, 20405266), (7, 11660152), (8, 10202633), (14, 5830076), (28, 2915038), (49, 1665736), (56, 1457519), (98, 832868), (196, 416434), (392, 208217)]