21353913

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{14737}}^1$

素因数の和:14773

約数の個数: 24

約数和(自身を含む): 36786048

約数和(自身を除く): 15432135

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 14737, 44211, 103159, 132633, 309477, 338951, 928431, 1016853, 2372657, 3050559, 7117971, 21353913]

約数ペア:

[(1, 21353913), (3, 7117971), (7, 3050559), (9, 2372657), (21, 1016853), (23, 928431), (63, 338951), (69, 309477), (161, 132633), (207, 103159), (483, 44211), (1449, 14737)]