18131220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{383}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 55351296

約数和(自身を除く): 37220076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 263, 383, 526, 766, 789, 1052, 1149, 1315, 1532, 1578, 1915, 2298, 2367, 2630, 3156, 3447, 3830, 3945, 4596, 4734, 5260, 5745, 6894, 7660, 7890, 9468, 11490, 11835, 13788, 15780, 17235, 22980, 23670, 34470, 47340, 68940, 100729, 201458, 302187, 402916, 503645, 604374, 906561, 1007290, 1208748, 1510935, 1813122, 2014580, 3021870, 3626244, 4532805, 6043740, 9065610, 18131220]

約数ペア:

[(1, 18131220), (2, 9065610), (3, 6043740), (4, 4532805), (5, 3626244), (6, 3021870), (9, 2014580), (10, 1813122), (12, 1510935), (15, 1208748), (18, 1007290), (20, 906561), (30, 604374), (36, 503645), (45, 402916), (60, 302187), (90, 201458), (180, 100729), (263, 68940), (383, 47340), (526, 34470), (766, 23670), (789, 22980), (1052, 17235), (1149, 15780), (1315, 13788), (1532, 11835), (1578, 11490), (1915, 9468), (2298, 7890), (2367, 7660), (2630, 6894), (3156, 5745), (3447, 5260), (3830, 4734), (3945, 4596)]