81568620

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{7193}}^1$

素因数の和:7221

約数の個数: 120

約数和(自身を含む): 292479264

約数和(自身を除く): 210910644

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2835, 3780, 5670, 7193, 11340, 14386, 21579, 28772, 35965, 43158, 50351, 64737, 71930, 86316, 100702, 107895, 129474, 143860, 151053, 194211, 201404, 215790, 251755, 258948, 302106, 323685, 388422, 431580, 453159, 503510, 582633, 604212, 647370, 755265, 776844, 906318, 971055, 1007020, 1165266, 1294740, 1359477, 1510530, 1812636, 1942110, 2265795, 2330532, 2718954, 2913165, 3021060, 3884220, 4078431, 4531590, 5437908, 5826330, 6797385, 8156862, 9063180, 11652660, 13594770, 16313724, 20392155, 27189540, 40784310, 81568620]

約数ペア:

[(1, 81568620), (2, 40784310), (3, 27189540), (4, 20392155), (5, 16313724), (6, 13594770), (7, 11652660), (9, 9063180), (10, 8156862), (12, 6797385), (14, 5826330), (15, 5437908), (18, 4531590), (20, 4078431), (21, 3884220), (27, 3021060), (28, 2913165), (30, 2718954), (35, 2330532), (36, 2265795), (42, 1942110), (45, 1812636), (54, 1510530), (60, 1359477), (63, 1294740), (70, 1165266), (81, 1007020), (84, 971055), (90, 906318), (105, 776844), (108, 755265), (126, 647370), (135, 604212), (140, 582633), (162, 503510), (180, 453159), (189, 431580), (210, 388422), (252, 323685), (270, 302106), (315, 258948), (324, 251755), (378, 215790), (405, 201404), (420, 194211), (540, 151053), (567, 143860), (630, 129474), (756, 107895), (810, 100702), (945, 86316), (1134, 71930), (1260, 64737), (1620, 50351), (1890, 43158), (2268, 35965), (2835, 28772), (3780, 21579), (5670, 14386), (7193, 11340)]