21898835

素因数分解:

$5^1\times 7^3\times {\mathrm{113}}^2$

素因数の和:252

約数の個数: 24

約数和(自身を含む): 30919200

約数和(自身を除く): 9020365

約数列:

[1, 5, 7, 35, 49, 113, 245, 343, 565, 791, 1715, 3955, 5537, 12769, 27685, 38759, 63845, 89383, 193795, 446915, 625681, 3128405, 4379767, 21898835]

約数ペア:

[(1, 21898835), (5, 4379767), (7, 3128405), (35, 625681), (49, 446915), (113, 193795), (245, 89383), (343, 63845), (565, 38759), (791, 27685), (1715, 12769), (3955, 5537)]