71961880

素因数分解:

$2^3\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{1783}}^1$

素因数の和:2803

約数の個数: 32

約数和(自身を含む): 162165600

約数和(自身を除く): 90203720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1009, 1783, 2018, 3566, 4036, 5045, 7132, 8072, 8915, 10090, 14264, 17830, 20180, 35660, 40360, 71320, 1799047, 3598094, 7196188, 8995235, 14392376, 17990470, 35980940, 71961880]

約数ペア:

[(1, 71961880), (2, 35980940), (4, 17990470), (5, 14392376), (8, 8995235), (10, 7196188), (20, 3598094), (40, 1799047), (1009, 71320), (1783, 40360), (2018, 35660), (3566, 20180), (4036, 17830), (5045, 14264), (7132, 10090), (8072, 8915)]