1221170209

素因数分解:

$7^4\times {\mathrm{229}}^1\times {\mathrm{2221}}^1$

素因数の和:2478

約数の個数: 20

約数和(自身を含む): 1431479060

約数和(自身を除く): 210308851

約数列:

[1, 7, 49, 229, 343, 1603, 2221, 2401, 11221, 15547, 78547, 108829, 508609, 549829, 761803, 3560263, 5332621, 24921841, 174452887, 1221170209]

約数ペア:

[(1, 1221170209), (7, 174452887), (49, 24921841), (229, 5332621), (343, 3560263), (1603, 761803), (2221, 549829), (2401, 508609), (11221, 108829), (15547, 78547)]