81939065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2557}}^1$

素因数の和:2621

約数の個数: 32

約数和(自身を含む): 116030880

約数和(自身を除く): 34091815

約数列:

[1, 5, 13, 17, 29, 65, 85, 145, 221, 377, 493, 1105, 1885, 2465, 2557, 6409, 12785, 32045, 33241, 43469, 74153, 166205, 217345, 370765, 565097, 963989, 1260601, 2825485, 4819945, 6303005, 16387813, 81939065]

約数ペア:

[(1, 81939065), (5, 16387813), (13, 6303005), (17, 4819945), (29, 2825485), (65, 1260601), (85, 963989), (145, 565097), (221, 370765), (377, 217345), (493, 166205), (1105, 74153), (1885, 43469), (2465, 33241), (2557, 32045), (6409, 12785)]