18511980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{18149}}^1$

素因数の和:18178

約数の個数: 48

約数和(自身を含む): 54885600

約数和(自身を除く): 36373620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 18149, 36298, 54447, 72596, 90745, 108894, 181490, 217788, 272235, 308533, 362980, 544470, 617066, 925599, 1088940, 1234132, 1542665, 1851198, 3085330, 3702396, 4627995, 6170660, 9255990, 18511980]

約数ペア:

[(1, 18511980), (2, 9255990), (3, 6170660), (4, 4627995), (5, 3702396), (6, 3085330), (10, 1851198), (12, 1542665), (15, 1234132), (17, 1088940), (20, 925599), (30, 617066), (34, 544470), (51, 362980), (60, 308533), (68, 272235), (85, 217788), (102, 181490), (170, 108894), (204, 90745), (255, 72596), (340, 54447), (510, 36298), (1020, 18149)]