72038440

素因数分解:

$2^3\times 5^1\times {\mathrm{1800961}}^1$

素因数の和:1800972

約数の個数: 16

約数和(自身を含む): 162086580

約数和(自身を除く): 90048140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1800961, 3601922, 7203844, 9004805, 14407688, 18009610, 36019220, 72038440]

約数ペア:

[(1, 72038440), (2, 36019220), (4, 18009610), (5, 14407688), (8, 9004805), (10, 7203844), (20, 3601922), (40, 1800961)]