257820640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1231}}^1$

素因数の和:1281

約数の個数: 192

約数和(自身を含む): 804722688

約数和(自身を除く): 546902048

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 20, 22, 28, 32, 34, 35, 40, 44, 55, 56, 68, 70, 77, 80, 85, 88, 110, 112, 119, 136, 140, 154, 160, 170, 176, 187, 220, 224, 238, 272, 280, 308, 340, 352, 374, 385, 440, 476, 544, 560, 595, 616, 680, 748, 770, 880, 935, 952, 1120, 1190, 1231, 1232, 1309, 1360, 1496, 1540, 1760, 1870, 1904, 2380, 2462, 2464, 2618, 2720, 2992, 3080, 3740, 3808, 4760, 4924, 5236, 5984, 6155, 6160, 6545, 7480, 8617, 9520, 9848, 10472, 12310, 12320, 13090, 13541, 14960, 17234, 19040, 19696, 20927, 20944, 24620, 26180, 27082, 29920, 34468, 39392, 41854, 41888, 43085, 49240, 52360, 54164, 67705, 68936, 83708, 86170, 94787, 98480, 104635, 104720, 108328, 135410, 137872, 146489, 167416, 172340, 189574, 196960, 209270, 209440, 216656, 230197, 270820, 275744, 292978, 334832, 344680, 379148, 418540, 433312, 460394, 473935, 541640, 585956, 669664, 689360, 732445, 758296, 837080, 920788, 947870, 1083280, 1150985, 1171912, 1378720, 1464890, 1516592, 1611379, 1674160, 1841576, 1895740, 2166560, 2301970, 2343824, 2929780, 3033184, 3222758, 3348320, 3683152, 3791480, 4603940, 4687648, 5859560, 6445516, 7366304, 7582960, 8056895, 9207880, 11719120, 12891032, 15165920, 16113790, 18415760, 23438240, 25782064, 32227580, 36831520, 51564128, 64455160, 128910320, 257820640]

約数ペア:

[(1, 257820640), (2, 128910320), (4, 64455160), (5, 51564128), (7, 36831520), (8, 32227580), (10, 25782064), (11, 23438240), (14, 18415760), (16, 16113790), (17, 15165920), (20, 12891032), (22, 11719120), (28, 9207880), (32, 8056895), (34, 7582960), (35, 7366304), (40, 6445516), (44, 5859560), (55, 4687648), (56, 4603940), (68, 3791480), (70, 3683152), (77, 3348320), (80, 3222758), (85, 3033184), (88, 2929780), (110, 2343824), (112, 2301970), (119, 2166560), (136, 1895740), (140, 1841576), (154, 1674160), (160, 1611379), (170, 1516592), (176, 1464890), (187, 1378720), (220, 1171912), (224, 1150985), (238, 1083280), (272, 947870), (280, 920788), (308, 837080), (340, 758296), (352, 732445), (374, 689360), (385, 669664), (440, 585956), (476, 541640), (544, 473935), (560, 460394), (595, 433312), (616, 418540), (680, 379148), (748, 344680), (770, 334832), (880, 292978), (935, 275744), (952, 270820), (1120, 230197), (1190, 216656), (1231, 209440), (1232, 209270), (1309, 196960), (1360, 189574), (1496, 172340), (1540, 167416), (1760, 146489), (1870, 137872), (1904, 135410), (2380, 108328), (2462, 104720), (2464, 104635), (2618, 98480), (2720, 94787), (2992, 86170), (3080, 83708), (3740, 68936), (3808, 67705), (4760, 54164), (4924, 52360), (5236, 49240), (5984, 43085), (6155, 41888), (6160, 41854), (6545, 39392), (7480, 34468), (8617, 29920), (9520, 27082), (9848, 26180), (10472, 24620), (12310, 20944), (12320, 20927), (13090, 19696), (13541, 19040), (14960, 17234)]