21085569

素因数分解:

$3^3\times {\mathrm{83}}^1\times {\mathrm{97}}^2$

素因数の和:286

約数の個数: 24

約数和(自身を含む): 31943520

約数和(自身を除く): 10857951

約数列:

[1, 3, 9, 27, 83, 97, 249, 291, 747, 873, 2241, 2619, 8051, 9409, 24153, 28227, 72459, 84681, 217377, 254043, 780947, 2342841, 7028523, 21085569]

約数ペア:

[(1, 21085569), (3, 7028523), (9, 2342841), (27, 780947), (83, 254043), (97, 217377), (249, 84681), (291, 72459), (747, 28227), (873, 24153), (2241, 9409), (2619, 8051)]