20636679

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51721}}^1$

素因数の和:51750

約数の個数: 16

約数和(自身を含む): 33102080

約数和(自身を除く): 12465401

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51721, 155163, 362047, 982699, 1086141, 2948097, 6878893, 20636679]

約数ペア:

[(1, 20636679), (3, 6878893), (7, 2948097), (19, 1086141), (21, 982699), (57, 362047), (133, 155163), (399, 51721)]