21957795

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28703}}^1$

素因数の和:28731

約数の個数: 24

約数和(自身を含む): 40300416

約数和(自身を除く): 18342621

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28703, 86109, 143515, 258327, 430545, 487951, 1291635, 1463853, 2439755, 4391559, 7319265, 21957795]

約数ペア:

[(1, 21957795), (3, 7319265), (5, 4391559), (9, 2439755), (15, 1463853), (17, 1291635), (45, 487951), (51, 430545), (85, 258327), (153, 143515), (255, 86109), (765, 28703)]