72840440

素因数分解:

$2^3\times 5^1\times {\mathrm{887}}^1\times {\mathrm{2053}}^1$

素因数の和:2951

約数の個数: 32

約数和(自身を含む): 164155680

約数和(自身を除く): 91315240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 887, 1774, 2053, 3548, 4106, 4435, 7096, 8212, 8870, 10265, 16424, 17740, 20530, 35480, 41060, 82120, 1821011, 3642022, 7284044, 9105055, 14568088, 18210110, 36420220, 72840440]

約数ペア:

[(1, 72840440), (2, 36420220), (4, 18210110), (5, 14568088), (8, 9105055), (10, 7284044), (20, 3642022), (40, 1821011), (887, 82120), (1774, 41060), (2053, 35480), (3548, 20530), (4106, 17740), (4435, 16424), (7096, 10265), (8212, 8870)]