21204250

素因数分解:

$2^1\times 5^3\times {\mathrm{89}}^1\times {\mathrm{953}}^1$

素因数の和:1059

約数の個数: 32

約数和(自身を含む): 40182480

約数和(自身を除く): 18978230

約数列:

[1, 2, 5, 10, 25, 50, 89, 125, 178, 250, 445, 890, 953, 1906, 2225, 4450, 4765, 9530, 11125, 22250, 23825, 47650, 84817, 119125, 169634, 238250, 424085, 848170, 2120425, 4240850, 10602125, 21204250]

約数ペア:

[(1, 21204250), (2, 10602125), (5, 4240850), (10, 2120425), (25, 848170), (50, 424085), (89, 238250), (125, 169634), (178, 119125), (250, 84817), (445, 47650), (890, 23825), (953, 22250), (1906, 11125), (2225, 9530), (4450, 4765)]