21604040

素因数分解:

$2^3\times 5^1\times {\mathrm{540101}}^1$

素因数の和:540112

約数の個数: 16

約数和(自身を含む): 48609180

約数和(自身を除く): 27005140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 540101, 1080202, 2160404, 2700505, 4320808, 5401010, 10802020, 21604040]

約数ペア:

[(1, 21604040), (2, 10802020), (4, 5401010), (5, 4320808), (8, 2700505), (10, 2160404), (20, 1080202), (40, 540101)]