81551590

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{91631}}^1$

素因数の和:91727

約数の個数: 16

約数和(自身を含む): 148443840

約数和(自身を除く): 66892250

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 91631, 183262, 458155, 916310, 8155159, 16310318, 40775795, 81551590]

約数ペア:

[(1, 81551590), (2, 40775795), (5, 16310318), (10, 8155159), (89, 916310), (178, 458155), (445, 183262), (890, 91631)]