254721280

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:340

約数の個数: 144

約数和(自身を含む): 676972800

約数和(自身を除く): 422251520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 79, 80, 88, 110, 128, 158, 160, 176, 220, 229, 256, 316, 320, 352, 395, 440, 458, 632, 640, 704, 790, 869, 880, 916, 1145, 1264, 1280, 1408, 1580, 1738, 1760, 1832, 2290, 2519, 2528, 2816, 3160, 3476, 3520, 3664, 4345, 4580, 5038, 5056, 6320, 6952, 7040, 7328, 8690, 9160, 10076, 10112, 12595, 12640, 13904, 14080, 14656, 17380, 18091, 18320, 20152, 20224, 25190, 25280, 27808, 29312, 34760, 36182, 36640, 40304, 50380, 50560, 55616, 58624, 69520, 72364, 73280, 80608, 90455, 100760, 101120, 111232, 139040, 144728, 146560, 161216, 180910, 199001, 201520, 222464, 278080, 289456, 293120, 322432, 361820, 398002, 403040, 556160, 578912, 644864, 723640, 796004, 806080, 995005, 1112320, 1157824, 1447280, 1592008, 1612160, 1990010, 2315648, 2894560, 3184016, 3224320, 3980020, 4631296, 5789120, 6368032, 7960040, 11578240, 12736064, 15920080, 23156480, 25472128, 31840160, 50944256, 63680320, 127360640, 254721280]

約数ペア:

[(1, 254721280), (2, 127360640), (4, 63680320), (5, 50944256), (8, 31840160), (10, 25472128), (11, 23156480), (16, 15920080), (20, 12736064), (22, 11578240), (32, 7960040), (40, 6368032), (44, 5789120), (55, 4631296), (64, 3980020), (79, 3224320), (80, 3184016), (88, 2894560), (110, 2315648), (128, 1990010), (158, 1612160), (160, 1592008), (176, 1447280), (220, 1157824), (229, 1112320), (256, 995005), (316, 806080), (320, 796004), (352, 723640), (395, 644864), (440, 578912), (458, 556160), (632, 403040), (640, 398002), (704, 361820), (790, 322432), (869, 293120), (880, 289456), (916, 278080), (1145, 222464), (1264, 201520), (1280, 199001), (1408, 180910), (1580, 161216), (1738, 146560), (1760, 144728), (1832, 139040), (2290, 111232), (2519, 101120), (2528, 100760), (2816, 90455), (3160, 80608), (3476, 73280), (3520, 72364), (3664, 69520), (4345, 58624), (4580, 55616), (5038, 50560), (5056, 50380), (6320, 40304), (6952, 36640), (7040, 36182), (7328, 34760), (8690, 29312), (9160, 27808), (10076, 25280), (10112, 25190), (12595, 20224), (12640, 20152), (13904, 18320), (14080, 18091), (14656, 17380)]