8721040

素因数分解:

$2^4\times 5^1\times {\mathrm{109013}}^1$

素因数の和:109026

約数の個数: 20

約数和(自身を含む): 20276604

約数和(自身を除く): 11555564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109013, 218026, 436052, 545065, 872104, 1090130, 1744208, 2180260, 4360520, 8721040]

約数ペア:

[(1, 8721040), (2, 4360520), (4, 2180260), (5, 1744208), (8, 1090130), (10, 872104), (16, 545065), (20, 436052), (40, 218026), (80, 109013)]