81720436

素因数分解:

$2^2\times 7^4\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:226

約数の個数: 60

約数和(自身を含む): 170659328

約数和(自身を除く): 88938892

約数列:

[1, 2, 4, 7, 14, 28, 49, 67, 98, 127, 134, 196, 254, 268, 343, 469, 508, 686, 889, 938, 1372, 1778, 1876, 2401, 3283, 3556, 4802, 6223, 6566, 8509, 9604, 12446, 13132, 17018, 22981, 24892, 34036, 43561, 45962, 59563, 87122, 91924, 119126, 160867, 174244, 238252, 304927, 321734, 416941, 609854, 643468, 833882, 1219708, 1667764, 2918587, 5837174, 11674348, 20430109, 40860218, 81720436]

約数ペア:

[(1, 81720436), (2, 40860218), (4, 20430109), (7, 11674348), (14, 5837174), (28, 2918587), (49, 1667764), (67, 1219708), (98, 833882), (127, 643468), (134, 609854), (196, 416941), (254, 321734), (268, 304927), (343, 238252), (469, 174244), (508, 160867), (686, 119126), (889, 91924), (938, 87122), (1372, 59563), (1778, 45962), (1876, 43561), (2401, 34036), (3283, 24892), (3556, 22981), (4802, 17018), (6223, 13132), (6566, 12446), (8509, 9604)]