81353405

素因数分解:

$5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{5393}}^1$

素因数の和:5836

約数の個数: 16

約数和(自身を含む): 111849984

約数和(自身を除く): 30496579

約数列:

[1, 5, 7, 35, 431, 2155, 3017, 5393, 15085, 26965, 37751, 188755, 2324383, 11621915, 16270681, 81353405]

約数ペア:

[(1, 81353405), (5, 16270681), (7, 11621915), (35, 2324383), (431, 188755), (2155, 37751), (3017, 26965), (5393, 15085)]