19999122

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{163}}^1$

素因数の和:216

約数の個数: 72

約数和(自身を含む): 47899152

約数和(自身を除く): 27900030

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 121, 143, 163, 169, 242, 286, 326, 338, 363, 429, 489, 507, 726, 858, 978, 1014, 1573, 1793, 1859, 2119, 3146, 3586, 3718, 4238, 4719, 5379, 5577, 6357, 9438, 10758, 11154, 12714, 19723, 20449, 23309, 27547, 39446, 40898, 46618, 55094, 59169, 61347, 69927, 82641, 118338, 122694, 139854, 165282, 256399, 303017, 512798, 606034, 769197, 909051, 1538394, 1818102, 3333187, 6666374, 9999561, 19999122]

約数ペア:

[(1, 19999122), (2, 9999561), (3, 6666374), (6, 3333187), (11, 1818102), (13, 1538394), (22, 909051), (26, 769197), (33, 606034), (39, 512798), (66, 303017), (78, 256399), (121, 165282), (143, 139854), (163, 122694), (169, 118338), (242, 82641), (286, 69927), (326, 61347), (338, 59169), (363, 55094), (429, 46618), (489, 40898), (507, 39446), (726, 27547), (858, 23309), (978, 20449), (1014, 19723), (1573, 12714), (1793, 11154), (1859, 10758), (2119, 9438), (3146, 6357), (3586, 5577), (3718, 5379), (4238, 4719)]