81489128

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^2\times {\mathrm{787}}^1$

素因数の和:886

約数の個数: 48

約数和(自身を含む): 179002080

約数和(自身を除く): 97512952

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 86, 172, 301, 344, 602, 787, 1204, 1574, 1849, 2408, 3148, 3698, 5509, 6296, 7396, 11018, 12943, 14792, 22036, 25886, 33841, 44072, 51772, 67682, 103544, 135364, 236887, 270728, 473774, 947548, 1455163, 1895096, 2910326, 5820652, 10186141, 11641304, 20372282, 40744564, 81489128]

約数ペア:

[(1, 81489128), (2, 40744564), (4, 20372282), (7, 11641304), (8, 10186141), (14, 5820652), (28, 2910326), (43, 1895096), (56, 1455163), (86, 947548), (172, 473774), (301, 270728), (344, 236887), (602, 135364), (787, 103544), (1204, 67682), (1574, 51772), (1849, 44072), (2408, 33841), (3148, 25886), (3698, 22036), (5509, 14792), (6296, 12943), (7396, 11018)]