71223140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{40013}}^1$

素因数の和:40111

約数の個数: 24

約数和(自身を含む): 151252920

約数和(自身を除く): 80029780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 40013, 80026, 160052, 200065, 400130, 800260, 3561157, 7122314, 14244628, 17805785, 35611570, 71223140]

約数ペア:

[(1, 71223140), (2, 35611570), (4, 17805785), (5, 14244628), (10, 7122314), (20, 3561157), (89, 800260), (178, 400130), (356, 200065), (445, 160052), (890, 80026), (1780, 40013)]