20975829

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52571}}^1$

素因数の和:52600

約数の個数: 16

約数和(自身を含む): 33646080

約数和(自身を除く): 12670251

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52571, 157713, 367997, 998849, 1103991, 2996547, 6991943, 20975829]

約数ペア:

[(1, 20975829), (3, 6991943), (7, 2996547), (19, 1103991), (21, 998849), (57, 367997), (133, 157713), (399, 52571)]