21702040

素因数分解:

$2^3\times 5^1\times {\mathrm{542551}}^1$

素因数の和:542562

約数の個数: 16

約数和(自身を含む): 48829680

約数和(自身を除く): 27127640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542551, 1085102, 2170204, 2712755, 4340408, 5425510, 10851020, 21702040]

約数ペア:

[(1, 21702040), (2, 10851020), (4, 5425510), (5, 4340408), (8, 2712755), (10, 2170204), (20, 1085102), (40, 542551)]