20944287

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{239}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16795233

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 107, 117, 239, 273, 321, 717, 749, 819, 963, 1391, 1673, 2151, 2247, 3107, 4173, 5019, 6741, 9321, 9737, 12519, 15057, 21749, 25573, 27963, 29211, 65247, 76719, 87633, 179011, 195741, 230157, 332449, 537033, 997347, 1611099, 2327143, 2992041, 6981429, 20944287]

約数ペア:

[(1, 20944287), (3, 6981429), (7, 2992041), (9, 2327143), (13, 1611099), (21, 997347), (39, 537033), (63, 332449), (91, 230157), (107, 195741), (117, 179011), (239, 87633), (273, 76719), (321, 65247), (717, 29211), (749, 27963), (819, 25573), (963, 21749), (1391, 15057), (1673, 12519), (2151, 9737), (2247, 9321), (3107, 6741), (4173, 5019)]