21653560

素因数分解:

$2^3\times 5^1\times {\mathrm{541339}}^1$

素因数の和:541350

約数の個数: 16

約数和(自身を含む): 48720600

約数和(自身を除く): 27067040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541339, 1082678, 2165356, 2706695, 4330712, 5413390, 10826780, 21653560]

約数ペア:

[(1, 21653560), (2, 10826780), (4, 5413390), (5, 4330712), (8, 2706695), (10, 2165356), (20, 1082678), (40, 541339)]