81278060

素因数分解:

$2^2\times 5^1\times {\mathrm{797}}^1\times {\mathrm{5099}}^1$

素因数の和:5905

約数の個数: 24

約数和(自身を含む): 170931600

約数和(自身を除く): 89653540

約数列:

[1, 2, 4, 5, 10, 20, 797, 1594, 3188, 3985, 5099, 7970, 10198, 15940, 20396, 25495, 50990, 101980, 4063903, 8127806, 16255612, 20319515, 40639030, 81278060]

約数ペア:

[(1, 81278060), (2, 40639030), (4, 20319515), (5, 16255612), (10, 8127806), (20, 4063903), (797, 101980), (1594, 50990), (3188, 25495), (3985, 20396), (5099, 15940), (7970, 10198)]