21702160

素因数分解:

$2^4\times 5^1\times {\mathrm{271277}}^1$

素因数の和:271290

約数の個数: 20

約数和(自身を含む): 50457708

約数和(自身を除く): 28755548

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271277, 542554, 1085108, 1356385, 2170216, 2712770, 4340432, 5425540, 10851080, 21702160]

約数ペア:

[(1, 21702160), (2, 10851080), (4, 5425540), (5, 4340432), (8, 2712770), (10, 2170216), (16, 1356385), (20, 1085108), (40, 542554), (80, 271277)]