20404881

素因数分解:

$3^2\times 7^1\times {\mathrm{419}}^1\times {\mathrm{773}}^1$

素因数の和:1205

約数の個数: 24

約数和(自身を含む): 33808320

約数和(自身を除く): 13403439

約数列:

[1, 3, 7, 9, 21, 63, 419, 773, 1257, 2319, 2933, 3771, 5411, 6957, 8799, 16233, 26397, 48699, 323887, 971661, 2267209, 2914983, 6801627, 20404881]

約数ペア:

[(1, 20404881), (3, 6801627), (7, 2914983), (9, 2267209), (21, 971661), (63, 323887), (419, 48699), (773, 26397), (1257, 16233), (2319, 8799), (2933, 6957), (3771, 5411)]