311809280

素因数分解:

$2^8\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:212

約数の個数: 144

約数和(自身を含む): 784111104

約数和(自身を除く): 472301824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 71, 73, 80, 94, 128, 142, 146, 160, 188, 235, 256, 284, 292, 320, 355, 365, 376, 470, 568, 584, 640, 710, 730, 752, 940, 1136, 1168, 1280, 1420, 1460, 1504, 1880, 2272, 2336, 2840, 2920, 3008, 3337, 3431, 3760, 4544, 4672, 5183, 5680, 5840, 6016, 6674, 6862, 7520, 9088, 9344, 10366, 11360, 11680, 12032, 13348, 13724, 15040, 16685, 17155, 18176, 18688, 20732, 22720, 23360, 25915, 26696, 27448, 30080, 33370, 34310, 41464, 45440, 46720, 51830, 53392, 54896, 60160, 66740, 68620, 82928, 90880, 93440, 103660, 106784, 109792, 133480, 137240, 165856, 207320, 213568, 219584, 243601, 266960, 274480, 331712, 414640, 427136, 439168, 487202, 533920, 548960, 663424, 829280, 854272, 878336, 974404, 1067840, 1097920, 1218005, 1326848, 1658560, 1948808, 2135680, 2195840, 2436010, 3317120, 3897616, 4271360, 4391680, 4872020, 6634240, 7795232, 9744040, 15590464, 19488080, 31180928, 38976160, 62361856, 77952320, 155904640, 311809280]

約数ペア:

[(1, 311809280), (2, 155904640), (4, 77952320), (5, 62361856), (8, 38976160), (10, 31180928), (16, 19488080), (20, 15590464), (32, 9744040), (40, 7795232), (47, 6634240), (64, 4872020), (71, 4391680), (73, 4271360), (80, 3897616), (94, 3317120), (128, 2436010), (142, 2195840), (146, 2135680), (160, 1948808), (188, 1658560), (235, 1326848), (256, 1218005), (284, 1097920), (292, 1067840), (320, 974404), (355, 878336), (365, 854272), (376, 829280), (470, 663424), (568, 548960), (584, 533920), (640, 487202), (710, 439168), (730, 427136), (752, 414640), (940, 331712), (1136, 274480), (1168, 266960), (1280, 243601), (1420, 219584), (1460, 213568), (1504, 207320), (1880, 165856), (2272, 137240), (2336, 133480), (2840, 109792), (2920, 106784), (3008, 103660), (3337, 93440), (3431, 90880), (3760, 82928), (4544, 68620), (4672, 66740), (5183, 60160), (5680, 54896), (5840, 53392), (6016, 51830), (6674, 46720), (6862, 45440), (7520, 41464), (9088, 34310), (9344, 33370), (10366, 30080), (11360, 27448), (11680, 26696), (12032, 25915), (13348, 23360), (13724, 22720), (15040, 20732), (16685, 18688), (17155, 18176)]