18981108

素因数分解:

$2^2\times 3^3\times {\mathrm{181}}^1\times {\mathrm{971}}^1$

素因数の和:1165

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 30552012

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 181, 362, 543, 724, 971, 1086, 1629, 1942, 2172, 2913, 3258, 3884, 4887, 5826, 6516, 8739, 9774, 11652, 17478, 19548, 26217, 34956, 52434, 104868, 175751, 351502, 527253, 703004, 1054506, 1581759, 2109012, 3163518, 4745277, 6327036, 9490554, 18981108]

約数ペア:

[(1, 18981108), (2, 9490554), (3, 6327036), (4, 4745277), (6, 3163518), (9, 2109012), (12, 1581759), (18, 1054506), (27, 703004), (36, 527253), (54, 351502), (108, 175751), (181, 104868), (362, 52434), (543, 34956), (724, 26217), (971, 19548), (1086, 17478), (1629, 11652), (1942, 9774), (2172, 8739), (2913, 6516), (3258, 5826), (3884, 4887)]