78121040

素因数分解:

$2^4\times 5^1\times {\mathrm{976513}}^1$

素因数の和:976526

約数の個数: 20

約数和(自身を含む): 181631604

約数和(自身を除く): 103510564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 976513, 1953026, 3906052, 4882565, 7812104, 9765130, 15624208, 19530260, 39060520, 78121040]

約数ペア:

[(1, 78121040), (2, 39060520), (4, 19530260), (5, 15624208), (8, 9765130), (10, 7812104), (16, 4882565), (20, 3906052), (40, 1953026), (80, 976513)]