81741960

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{25229}}^1$

素因数の和:25252

約数の個数: 80

約数和(自身を含む): 274754700

約数和(自身を除く): 193012740

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 25229, 50458, 75687, 100916, 126145, 151374, 201832, 227061, 252290, 302748, 378435, 454122, 504580, 605496, 681183, 756870, 908244, 1009160, 1135305, 1362366, 1513740, 1816488, 2043549, 2270610, 2724732, 3027480, 3405915, 4087098, 4541220, 5449464, 6811830, 8174196, 9082440, 10217745, 13623660, 16348392, 20435490, 27247320, 40870980, 81741960]

約数ペア:

[(1, 81741960), (2, 40870980), (3, 27247320), (4, 20435490), (5, 16348392), (6, 13623660), (8, 10217745), (9, 9082440), (10, 8174196), (12, 6811830), (15, 5449464), (18, 4541220), (20, 4087098), (24, 3405915), (27, 3027480), (30, 2724732), (36, 2270610), (40, 2043549), (45, 1816488), (54, 1513740), (60, 1362366), (72, 1135305), (81, 1009160), (90, 908244), (108, 756870), (120, 681183), (135, 605496), (162, 504580), (180, 454122), (216, 378435), (270, 302748), (324, 252290), (360, 227061), (405, 201832), (540, 151374), (648, 126145), (810, 100916), (1080, 75687), (1620, 50458), (3240, 25229)]