21118203

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{277}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 31485168

約数和(自身を除く): 10366965

約数列:

[1, 3, 9, 43, 129, 197, 277, 387, 591, 831, 1773, 2493, 8471, 11911, 25413, 35733, 54569, 76239, 107199, 163707, 491121, 2346467, 7039401, 21118203]

約数ペア:

[(1, 21118203), (3, 7039401), (9, 2346467), (43, 491121), (129, 163707), (197, 107199), (277, 76239), (387, 54569), (591, 35733), (831, 25413), (1773, 11911), (2493, 8471)]