20287449

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:411

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18419751

約数列:

[1, 3, 7, 9, 13, 21, 23, 27, 39, 63, 69, 91, 117, 161, 189, 207, 273, 299, 351, 359, 483, 621, 819, 897, 1077, 1449, 2093, 2457, 2513, 2691, 3231, 4347, 4667, 6279, 7539, 8073, 8257, 9693, 14001, 18837, 22617, 24771, 32669, 42003, 56511, 57799, 67851, 74313, 98007, 107341, 126009, 173397, 222939, 294021, 322023, 520191, 751387, 882063, 966069, 1560573, 2254161, 2898207, 6762483, 20287449]

約数ペア:

[(1, 20287449), (3, 6762483), (7, 2898207), (9, 2254161), (13, 1560573), (21, 966069), (23, 882063), (27, 751387), (39, 520191), (63, 322023), (69, 294021), (91, 222939), (117, 173397), (161, 126009), (189, 107341), (207, 98007), (273, 74313), (299, 67851), (351, 57799), (359, 56511), (483, 42003), (621, 32669), (819, 24771), (897, 22617), (1077, 18837), (1449, 14001), (2093, 9693), (2457, 8257), (2513, 8073), (2691, 7539), (3231, 6279), (4347, 4667)]