20651760

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{3187}}^1$

素因数の和:3212

約数の個数: 100

約数和(自身を含む): 71749128

約数和(自身を除く): 51097368

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 270, 324, 360, 405, 432, 540, 648, 720, 810, 1080, 1296, 1620, 2160, 3187, 3240, 6374, 6480, 9561, 12748, 15935, 19122, 25496, 28683, 31870, 38244, 47805, 50992, 57366, 63740, 76488, 86049, 95610, 114732, 127480, 143415, 152976, 172098, 191220, 229464, 254960, 258147, 286830, 344196, 382440, 430245, 458928, 516294, 573660, 688392, 764880, 860490, 1032588, 1147320, 1290735, 1376784, 1720980, 2065176, 2294640, 2581470, 3441960, 4130352, 5162940, 6883920, 10325880, 20651760]

約数ペア:

[(1, 20651760), (2, 10325880), (3, 6883920), (4, 5162940), (5, 4130352), (6, 3441960), (8, 2581470), (9, 2294640), (10, 2065176), (12, 1720980), (15, 1376784), (16, 1290735), (18, 1147320), (20, 1032588), (24, 860490), (27, 764880), (30, 688392), (36, 573660), (40, 516294), (45, 458928), (48, 430245), (54, 382440), (60, 344196), (72, 286830), (80, 258147), (81, 254960), (90, 229464), (108, 191220), (120, 172098), (135, 152976), (144, 143415), (162, 127480), (180, 114732), (216, 95610), (240, 86049), (270, 76488), (324, 63740), (360, 57366), (405, 50992), (432, 47805), (540, 38244), (648, 31870), (720, 28683), (810, 25496), (1080, 19122), (1296, 15935), (1620, 12748), (2160, 9561), (3187, 6480), (3240, 6374)]