27881555

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 37836288

約数和(自身を除く): 9954733

約数列:

[1, 5, 13, 31, 65, 101, 137, 155, 403, 505, 685, 1313, 1781, 2015, 3131, 4247, 6565, 8905, 13837, 15655, 21235, 40703, 55211, 69185, 179881, 203515, 276055, 428947, 899405, 2144735, 5576311, 27881555]

約数ペア:

[(1, 27881555), (5, 5576311), (13, 2144735), (31, 899405), (65, 428947), (101, 276055), (137, 203515), (155, 179881), (403, 69185), (505, 55211), (685, 40703), (1313, 21235), (1781, 15655), (2015, 13837), (3131, 8905), (4247, 6565)]