81338320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{431}}^1$

素因数の和:788

約数の個数: 80

約数和(自身を含む): 217271808

約数和(自身を除く): 135933488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 337, 431, 560, 674, 862, 1348, 1685, 1724, 2155, 2359, 2696, 3017, 3370, 3448, 4310, 4718, 5392, 6034, 6740, 6896, 8620, 9436, 11795, 12068, 13480, 15085, 17240, 18872, 23590, 24136, 26960, 30170, 34480, 37744, 47180, 48272, 60340, 94360, 120680, 145247, 188720, 241360, 290494, 580988, 726235, 1016729, 1161976, 1452470, 2033458, 2323952, 2904940, 4066916, 5083645, 5809880, 8133832, 10167290, 11619760, 16267664, 20334580, 40669160, 81338320]

約数ペア:

[(1, 81338320), (2, 40669160), (4, 20334580), (5, 16267664), (7, 11619760), (8, 10167290), (10, 8133832), (14, 5809880), (16, 5083645), (20, 4066916), (28, 2904940), (35, 2323952), (40, 2033458), (56, 1452470), (70, 1161976), (80, 1016729), (112, 726235), (140, 580988), (280, 290494), (337, 241360), (431, 188720), (560, 145247), (674, 120680), (862, 94360), (1348, 60340), (1685, 48272), (1724, 47180), (2155, 37744), (2359, 34480), (2696, 30170), (3017, 26960), (3370, 24136), (3448, 23590), (4310, 18872), (4718, 17240), (5392, 15085), (6034, 13480), (6740, 12068), (6896, 11795), (8620, 9436)]