20672071

素因数分解:

$7^2\times {\mathrm{31}}^2\times {\mathrm{439}}^1$

素因数の和:515

約数の個数: 18

約数和(自身を含む): 24904440

約数和(自身を除く): 4232369

約数列:

[1, 7, 31, 49, 217, 439, 961, 1519, 3073, 6727, 13609, 21511, 47089, 95263, 421879, 666841, 2953153, 20672071]

約数ペア:

[(1, 20672071), (7, 2953153), (31, 666841), (49, 421879), (217, 95263), (439, 47089), (961, 21511), (1519, 13609), (3073, 6727)]