21168245

素因数分解:

$5^1\times 7^3\times {\mathrm{12343}}^1$

素因数の和:12369

約数の個数: 16

約数和(自身を含む): 29625600

約数和(自身を除く): 8457355

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 12343, 61715, 86401, 432005, 604807, 3024035, 4233649, 21168245]

約数ペア:

[(1, 21168245), (5, 4233649), (7, 3024035), (35, 604807), (49, 432005), (245, 86401), (343, 61715), (1715, 12343)]