20733489

素因数分解:

$3^6\times 7^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:281

約数の個数: 56

約数和(自身を含む): 37774080

約数和(自身を除く): 17040591

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 239, 243, 357, 459, 567, 717, 729, 1071, 1377, 1673, 1701, 2151, 3213, 4063, 4131, 5019, 5103, 6453, 9639, 12189, 12393, 15057, 19359, 28441, 28917, 36567, 45171, 58077, 85323, 86751, 109701, 135513, 174231, 255969, 329103, 406539, 767907, 987309, 1219617, 2303721, 2961927, 6911163, 20733489]

約数ペア:

[(1, 20733489), (3, 6911163), (7, 2961927), (9, 2303721), (17, 1219617), (21, 987309), (27, 767907), (51, 406539), (63, 329103), (81, 255969), (119, 174231), (153, 135513), (189, 109701), (239, 86751), (243, 85323), (357, 58077), (459, 45171), (567, 36567), (717, 28917), (729, 28441), (1071, 19359), (1377, 15057), (1673, 12393), (1701, 12189), (2151, 9639), (3213, 6453), (4063, 5103), (4131, 5019)]