16905040

素因数分解:

$2^4\times 5^1\times {\mathrm{211313}}^1$

素因数の和:211326

約数の個数: 20

約数和(自身を含む): 39304404

約数和(自身を除く): 22399364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211313, 422626, 845252, 1056565, 1690504, 2113130, 3381008, 4226260, 8452520, 16905040]

約数ペア:

[(1, 16905040), (2, 8452520), (4, 4226260), (5, 3381008), (8, 2113130), (10, 1690504), (16, 1056565), (20, 845252), (40, 422626), (80, 211313)]