28117180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2207}}^1$

素因数の和:2243

約数の個数: 72

約数和(自身を含む): 74003328

約数和(自身を除く): 45886148

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2207, 2548, 3185, 4414, 6370, 8828, 11035, 12740, 15449, 22070, 28691, 30898, 44140, 57382, 61796, 77245, 108143, 114764, 143455, 154490, 200837, 216286, 286910, 308980, 401674, 432572, 540715, 573820, 803348, 1004185, 1081430, 1405859, 2008370, 2162860, 2811718, 4016740, 5623436, 7029295, 14058590, 28117180]

約数ペア:

[(1, 28117180), (2, 14058590), (4, 7029295), (5, 5623436), (7, 4016740), (10, 2811718), (13, 2162860), (14, 2008370), (20, 1405859), (26, 1081430), (28, 1004185), (35, 803348), (49, 573820), (52, 540715), (65, 432572), (70, 401674), (91, 308980), (98, 286910), (130, 216286), (140, 200837), (182, 154490), (196, 143455), (245, 114764), (260, 108143), (364, 77245), (455, 61796), (490, 57382), (637, 44140), (910, 30898), (980, 28691), (1274, 22070), (1820, 15449), (2207, 12740), (2548, 11035), (3185, 8828), (4414, 6370)]