20008090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22481}}^1$

素因数の和:22577

約数の個数: 16

約数和(自身を含む): 36420840

約数和(自身を除く): 16412750

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 22481, 44962, 112405, 224810, 2000809, 4001618, 10004045, 20008090]

約数ペア:

[(1, 20008090), (2, 10004045), (5, 4001618), (10, 2000809), (89, 224810), (178, 112405), (445, 44962), (890, 22481)]