78897040

素因数分解:

$2^4\times 5^1\times {\mathrm{986213}}^1$

素因数の和:986226

約数の個数: 20

約数和(自身を含む): 183435804

約数和(自身を除く): 104538764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986213, 1972426, 3944852, 4931065, 7889704, 9862130, 15779408, 19724260, 39448520, 78897040]

約数ペア:

[(1, 78897040), (2, 39448520), (4, 19724260), (5, 15779408), (8, 9862130), (10, 7889704), (16, 4931065), (20, 3944852), (40, 1972426), (80, 986213)]