1891567145

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{72211}}^1$

素因数の和:72273

約数の個数: 24

約数和(自身を含む): 2537240832

約数和(自身を除く): 645673687

約数列:

[1, 5, 13, 31, 65, 155, 169, 403, 845, 2015, 5239, 26195, 72211, 361055, 938743, 2238541, 4693715, 11192705, 12203659, 29101033, 61018295, 145505165, 378313429, 1891567145]

約数ペア:

[(1, 1891567145), (5, 378313429), (13, 145505165), (31, 61018295), (65, 29101033), (155, 12203659), (169, 11192705), (403, 4693715), (845, 2238541), (2015, 938743), (5239, 361055), (26195, 72211)]