81831780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1187}}^1$

素因数の和:1585

約数の個数: 72

約数和(自身を含む): 249080832

約数和(自身を除く): 167249052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 383, 766, 1149, 1187, 1532, 1915, 2298, 2374, 3447, 3561, 3830, 4596, 4748, 5745, 5935, 6894, 7122, 7660, 10683, 11490, 11870, 13788, 14244, 17235, 17805, 21366, 22980, 23740, 34470, 35610, 42732, 53415, 68940, 71220, 106830, 213660, 454621, 909242, 1363863, 1818484, 2273105, 2727726, 4091589, 4546210, 5455452, 6819315, 8183178, 9092420, 13638630, 16366356, 20457945, 27277260, 40915890, 81831780]

約数ペア:

[(1, 81831780), (2, 40915890), (3, 27277260), (4, 20457945), (5, 16366356), (6, 13638630), (9, 9092420), (10, 8183178), (12, 6819315), (15, 5455452), (18, 4546210), (20, 4091589), (30, 2727726), (36, 2273105), (45, 1818484), (60, 1363863), (90, 909242), (180, 454621), (383, 213660), (766, 106830), (1149, 71220), (1187, 68940), (1532, 53415), (1915, 42732), (2298, 35610), (2374, 34470), (3447, 23740), (3561, 22980), (3830, 21366), (4596, 17805), (4748, 17235), (5745, 14244), (5935, 13788), (6894, 11870), (7122, 11490), (7660, 10683)]