205091280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{643}}^1$

素因数の和:1105

約数の個数: 120

約数和(自身を含む): 691393248

約数和(自身を除く): 486301968

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 443, 643, 720, 886, 1286, 1329, 1772, 1929, 2215, 2572, 2658, 3215, 3544, 3858, 3987, 4430, 5144, 5316, 5787, 6430, 6645, 7088, 7716, 7974, 8860, 9645, 10288, 10632, 11574, 12860, 13290, 15432, 15948, 17720, 19290, 19935, 21264, 23148, 25720, 26580, 28935, 30864, 31896, 35440, 38580, 39870, 46296, 51440, 53160, 57870, 63792, 77160, 79740, 92592, 106320, 115740, 154320, 159480, 231480, 284849, 318960, 462960, 569698, 854547, 1139396, 1424245, 1709094, 2278792, 2563641, 2848490, 3418188, 4272735, 4557584, 5127282, 5696980, 6836376, 8545470, 10254564, 11393960, 12818205, 13672752, 17090940, 20509128, 22787920, 25636410, 34181880, 41018256, 51272820, 68363760, 102545640, 205091280]

約数ペア:

[(1, 205091280), (2, 102545640), (3, 68363760), (4, 51272820), (5, 41018256), (6, 34181880), (8, 25636410), (9, 22787920), (10, 20509128), (12, 17090940), (15, 13672752), (16, 12818205), (18, 11393960), (20, 10254564), (24, 8545470), (30, 6836376), (36, 5696980), (40, 5127282), (45, 4557584), (48, 4272735), (60, 3418188), (72, 2848490), (80, 2563641), (90, 2278792), (120, 1709094), (144, 1424245), (180, 1139396), (240, 854547), (360, 569698), (443, 462960), (643, 318960), (720, 284849), (886, 231480), (1286, 159480), (1329, 154320), (1772, 115740), (1929, 106320), (2215, 92592), (2572, 79740), (2658, 77160), (3215, 63792), (3544, 57870), (3858, 53160), (3987, 51440), (4430, 46296), (5144, 39870), (5316, 38580), (5787, 35440), (6430, 31896), (6645, 30864), (7088, 28935), (7716, 26580), (7974, 25720), (8860, 23148), (9645, 21264), (10288, 19935), (10632, 19290), (11574, 17720), (12860, 15948), (13290, 15432)]