81338440

素因数分解:

$2^3\times 5^1\times {\mathrm{2033461}}^1$

素因数の和:2033472

約数の個数: 16

約数和(自身を含む): 183011580

約数和(自身を除く): 101673140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2033461, 4066922, 8133844, 10167305, 16267688, 20334610, 40669220, 81338440]

約数ペア:

[(1, 81338440), (2, 40669220), (4, 20334610), (5, 16267688), (8, 10167305), (10, 8133844), (20, 4066922), (40, 2033461)]