71580920

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{20107}}^1$

素因数の和:20207

約数の個数: 32

約数和(自身を含む): 162874800

約数和(自身を除く): 91293880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 20107, 40214, 80428, 100535, 160856, 201070, 402140, 804280, 1789523, 3579046, 7158092, 8947615, 14316184, 17895230, 35790460, 71580920]

約数ペア:

[(1, 71580920), (2, 35790460), (4, 17895230), (5, 14316184), (8, 8947615), (10, 7158092), (20, 3579046), (40, 1789523), (89, 804280), (178, 402140), (356, 201070), (445, 160856), (712, 100535), (890, 80428), (1780, 40214), (3560, 20107)]