80778800

素因数分解:

$2^4\times 5^2\times {\mathrm{201947}}^1$

素因数の和:201965

約数の個数: 30

約数和(自身を含む): 194072028

約数和(自身を除く): 113293228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 201947, 403894, 807788, 1009735, 1615576, 2019470, 3231152, 4038940, 5048675, 8077880, 10097350, 16155760, 20194700, 40389400, 80778800]

約数ペア:

[(1, 80778800), (2, 40389400), (4, 20194700), (5, 16155760), (8, 10097350), (10, 8077880), (16, 5048675), (20, 4038940), (25, 3231152), (40, 2019470), (50, 1615576), (80, 1009735), (100, 807788), (200, 403894), (400, 201947)]