81403770

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{883}}^1$

素因数の和:1339

約数の個数: 64

約数和(自身を含む): 224040960

約数和(自身を除く): 142637190

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 439, 878, 883, 1317, 1766, 2195, 2634, 2649, 3073, 4390, 4415, 5298, 6146, 6181, 6585, 8830, 9219, 12362, 13170, 13245, 15365, 18438, 18543, 26490, 30730, 30905, 37086, 46095, 61810, 92190, 92715, 185430, 387637, 775274, 1162911, 1938185, 2325822, 2713459, 3876370, 5426918, 5814555, 8140377, 11629110, 13567295, 16280754, 27134590, 40701885, 81403770]

約数ペア:

[(1, 81403770), (2, 40701885), (3, 27134590), (5, 16280754), (6, 13567295), (7, 11629110), (10, 8140377), (14, 5814555), (15, 5426918), (21, 3876370), (30, 2713459), (35, 2325822), (42, 1938185), (70, 1162911), (105, 775274), (210, 387637), (439, 185430), (878, 92715), (883, 92190), (1317, 61810), (1766, 46095), (2195, 37086), (2634, 30905), (2649, 30730), (3073, 26490), (4390, 18543), (4415, 18438), (5298, 15365), (6146, 13245), (6181, 13170), (6585, 12362), (8830, 9219)]