81722140

素因数分解:

$2^2\times 5^1\times {\mathrm{587}}^1\times {\mathrm{6961}}^1$

素因数の和:7557

約数の個数: 24

約数和(自身を含む): 171933552

約数和(自身を除く): 90211412

約数列:

[1, 2, 4, 5, 10, 20, 587, 1174, 2348, 2935, 5870, 6961, 11740, 13922, 27844, 34805, 69610, 139220, 4086107, 8172214, 16344428, 20430535, 40861070, 81722140]

約数ペア:

[(1, 81722140), (2, 40861070), (4, 20430535), (5, 16344428), (10, 8172214), (20, 4086107), (587, 139220), (1174, 69610), (2348, 34805), (2935, 27844), (5870, 13922), (6961, 11740)]