21393560

素因数分解:

$2^3\times 5^1\times {\mathrm{534839}}^1$

素因数の和:534850

約数の個数: 16

約数和(自身を含む): 48135600

約数和(自身を除く): 26742040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 534839, 1069678, 2139356, 2674195, 4278712, 5348390, 10696780, 21393560]

約数ペア:

[(1, 21393560), (2, 10696780), (4, 5348390), (5, 4278712), (8, 2674195), (10, 2139356), (20, 1069678), (40, 534839)]