161860720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:447

約数の個数: 120

約数和(自身を含む): 442230624

約数和(自身を除く): 280369904

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 157, 196, 245, 263, 280, 314, 392, 490, 526, 560, 628, 784, 785, 980, 1052, 1099, 1256, 1315, 1570, 1841, 1960, 2104, 2198, 2512, 2630, 3140, 3682, 3920, 4208, 4396, 5260, 5495, 6280, 7364, 7693, 8792, 9205, 10520, 10990, 12560, 12887, 14728, 15386, 17584, 18410, 21040, 21980, 25774, 29456, 30772, 36820, 38465, 41291, 43960, 51548, 61544, 64435, 73640, 76930, 82582, 87920, 103096, 123088, 128870, 147280, 153860, 165164, 206192, 206455, 257740, 289037, 307720, 330328, 412910, 515480, 578074, 615440, 660656, 825820, 1030960, 1156148, 1445185, 1651640, 2023259, 2312296, 2890370, 3303280, 4046518, 4624592, 5780740, 8093036, 10116295, 11561480, 16186072, 20232590, 23122960, 32372144, 40465180, 80930360, 161860720]

約数ペア:

[(1, 161860720), (2, 80930360), (4, 40465180), (5, 32372144), (7, 23122960), (8, 20232590), (10, 16186072), (14, 11561480), (16, 10116295), (20, 8093036), (28, 5780740), (35, 4624592), (40, 4046518), (49, 3303280), (56, 2890370), (70, 2312296), (80, 2023259), (98, 1651640), (112, 1445185), (140, 1156148), (157, 1030960), (196, 825820), (245, 660656), (263, 615440), (280, 578074), (314, 515480), (392, 412910), (490, 330328), (526, 307720), (560, 289037), (628, 257740), (784, 206455), (785, 206192), (980, 165164), (1052, 153860), (1099, 147280), (1256, 128870), (1315, 123088), (1570, 103096), (1841, 87920), (1960, 82582), (2104, 76930), (2198, 73640), (2512, 64435), (2630, 61544), (3140, 51548), (3682, 43960), (3920, 41291), (4208, 38465), (4396, 36820), (5260, 30772), (5495, 29456), (6280, 25774), (7364, 21980), (7693, 21040), (8792, 18410), (9205, 17584), (10520, 15386), (10990, 14728), (12560, 12887)]