21069853

素因数分解:

$7^2\times {\mathrm{79}}^1\times {\mathrm{5443}}^1$

素因数の和:5536

約数の個数: 12

約数和(自身を含む): 24824640

約数和(自身を除く): 3754787

約数列:

[1, 7, 49, 79, 553, 3871, 5443, 38101, 266707, 429997, 3009979, 21069853]

約数ペア:

[(1, 21069853), (7, 3009979), (49, 429997), (79, 266707), (553, 38101), (3871, 5443)]