661903569

素因数分解:

$3^6\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1$

素因数の和:417

約数の個数: 56

約数和(自身を含む): 1038787200

約数和(自身を除く): 376883631

約数列:

[1, 3, 9, 27, 29, 81, 87, 131, 239, 243, 261, 393, 717, 729, 783, 1179, 2151, 2349, 3537, 3799, 6453, 6931, 7047, 10611, 11397, 19359, 20793, 21141, 31309, 31833, 34191, 58077, 62379, 93927, 95499, 102573, 174231, 187137, 281781, 307719, 561411, 845343, 907961, 923157, 1684233, 2536029, 2723883, 2769471, 5052699, 7608087, 8171649, 22824261, 24514947, 73544841, 220634523, 661903569]

約数ペア:

[(1, 661903569), (3, 220634523), (9, 73544841), (27, 24514947), (29, 22824261), (81, 8171649), (87, 7608087), (131, 5052699), (239, 2769471), (243, 2723883), (261, 2536029), (393, 1684233), (717, 923157), (729, 907961), (783, 845343), (1179, 561411), (2151, 307719), (2349, 281781), (3537, 187137), (3799, 174231), (6453, 102573), (6931, 95499), (7047, 93927), (10611, 62379), (11397, 58077), (19359, 34191), (20793, 31833), (21141, 31309)]