20455080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:339

約数の個数: 128

約数和(自身を含む): 66977280

約数和(自身を除く): 46522200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 37, 40, 51, 60, 68, 74, 85, 102, 111, 120, 136, 148, 170, 185, 204, 222, 255, 271, 296, 340, 370, 408, 444, 510, 542, 555, 629, 680, 740, 813, 888, 1020, 1084, 1110, 1258, 1355, 1480, 1626, 1887, 2040, 2168, 2220, 2516, 2710, 3145, 3252, 3774, 4065, 4440, 4607, 5032, 5420, 6290, 6504, 7548, 8130, 9214, 9435, 10027, 10840, 12580, 13821, 15096, 16260, 18428, 18870, 20054, 23035, 25160, 27642, 30081, 32520, 36856, 37740, 40108, 46070, 50135, 55284, 60162, 69105, 75480, 80216, 92140, 100270, 110568, 120324, 138210, 150405, 170459, 184280, 200540, 240648, 276420, 300810, 340918, 401080, 511377, 552840, 601620, 681836, 852295, 1022754, 1203240, 1363672, 1704590, 2045508, 2556885, 3409180, 4091016, 5113770, 6818360, 10227540, 20455080]

約数ペア:

[(1, 20455080), (2, 10227540), (3, 6818360), (4, 5113770), (5, 4091016), (6, 3409180), (8, 2556885), (10, 2045508), (12, 1704590), (15, 1363672), (17, 1203240), (20, 1022754), (24, 852295), (30, 681836), (34, 601620), (37, 552840), (40, 511377), (51, 401080), (60, 340918), (68, 300810), (74, 276420), (85, 240648), (102, 200540), (111, 184280), (120, 170459), (136, 150405), (148, 138210), (170, 120324), (185, 110568), (204, 100270), (222, 92140), (255, 80216), (271, 75480), (296, 69105), (340, 60162), (370, 55284), (408, 50135), (444, 46070), (510, 40108), (542, 37740), (555, 36856), (629, 32520), (680, 30081), (740, 27642), (813, 25160), (888, 23035), (1020, 20054), (1084, 18870), (1110, 18428), (1258, 16260), (1355, 15096), (1480, 13821), (1626, 12580), (1887, 10840), (2040, 10027), (2168, 9435), (2220, 9214), (2516, 8130), (2710, 7548), (3145, 6504), (3252, 6290), (3774, 5420), (4065, 5032), (4440, 4607)]