20357748

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13151}}^1$

素因数の和:13204

約数の個数: 36

約数和(自身を含む): 52660608

約数和(自身を除く): 32302860

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13151, 26302, 39453, 52604, 78906, 118359, 157812, 236718, 473436, 565493, 1130986, 1696479, 2261972, 3392958, 5089437, 6785916, 10178874, 20357748]

約数ペア:

[(1, 20357748), (2, 10178874), (3, 6785916), (4, 5089437), (6, 3392958), (9, 2261972), (12, 1696479), (18, 1130986), (36, 565493), (43, 473436), (86, 236718), (129, 157812), (172, 118359), (258, 78906), (387, 52604), (516, 39453), (774, 26302), (1548, 13151)]