21056265

素因数分解:

$3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5923}}^1$

素因数の和:6013

約数の個数: 24

約数和(自身を含む): 36965760

約数和(自身を除く): 15909495

約数列:

[1, 3, 5, 9, 15, 45, 79, 237, 395, 711, 1185, 3555, 5923, 17769, 29615, 53307, 88845, 266535, 467917, 1403751, 2339585, 4211253, 7018755, 21056265]

約数ペア:

[(1, 21056265), (3, 7018755), (5, 4211253), (9, 2339585), (15, 1403751), (45, 467917), (79, 266535), (237, 88845), (395, 53307), (711, 29615), (1185, 17769), (3555, 5923)]