661388

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 1505280

約数和(自身を除く): 843892

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 52, 79, 91, 92, 158, 161, 182, 299, 316, 322, 364, 553, 598, 644, 1027, 1106, 1196, 1817, 2054, 2093, 2212, 3634, 4108, 4186, 7189, 7268, 8372, 12719, 14378, 23621, 25438, 28756, 47242, 50876, 94484, 165347, 330694, 661388]

約数ペア:

[(1, 661388), (2, 330694), (4, 165347), (7, 94484), (13, 50876), (14, 47242), (23, 28756), (26, 25438), (28, 23621), (46, 14378), (52, 12719), (79, 8372), (91, 7268), (92, 7189), (158, 4186), (161, 4108), (182, 3634), (299, 2212), (316, 2093), (322, 2054), (364, 1817), (553, 1196), (598, 1106), (644, 1027)]