18873785

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 7979335

約数列:

[1, 5, 7, 35, 73, 83, 89, 365, 415, 445, 511, 581, 623, 2555, 2905, 3115, 6059, 6497, 7387, 30295, 32485, 36935, 42413, 45479, 51709, 212065, 227395, 258545, 539251, 2696255, 3774757, 18873785]

約数ペア:

[(1, 18873785), (5, 3774757), (7, 2696255), (35, 539251), (73, 258545), (83, 227395), (89, 212065), (365, 51709), (415, 45479), (445, 42413), (511, 36935), (581, 32485), (623, 30295), (2555, 7387), (2905, 6497), (3115, 6059)]