81335705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{569}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 112285440

約数和(自身を除く): 30949735

約数列:

[1, 5, 11, 23, 55, 113, 115, 253, 565, 569, 1243, 1265, 2599, 2845, 6215, 6259, 12995, 13087, 28589, 31295, 64297, 65435, 142945, 143957, 321485, 707267, 719785, 1478831, 3536335, 7394155, 16267141, 81335705]

約数ペア:

[(1, 81335705), (5, 16267141), (11, 7394155), (23, 3536335), (55, 1478831), (113, 719785), (115, 707267), (253, 321485), (565, 143957), (569, 142945), (1243, 65435), (1265, 64297), (2599, 31295), (2845, 28589), (6215, 13087), (6259, 12995)]