15855021

素因数分解:

$3^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:277

約数の個数: 56

約数和(自身を含む): 29379840

約数和(自身を除く): 13524819

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 239, 243, 273, 351, 567, 717, 729, 819, 1053, 1673, 1701, 2151, 2457, 3107, 3159, 5019, 5103, 6453, 7371, 9321, 9477, 15057, 19359, 21749, 22113, 27963, 45171, 58077, 65247, 66339, 83889, 135513, 174231, 195741, 251667, 406539, 587223, 755001, 1219617, 1761669, 2265003, 5285007, 15855021]

約数ペア:

[(1, 15855021), (3, 5285007), (7, 2265003), (9, 1761669), (13, 1219617), (21, 755001), (27, 587223), (39, 406539), (63, 251667), (81, 195741), (91, 174231), (117, 135513), (189, 83889), (239, 66339), (243, 65247), (273, 58077), (351, 45171), (567, 27963), (717, 22113), (729, 21749), (819, 19359), (1053, 15057), (1673, 9477), (1701, 9321), (2151, 7371), (2457, 6453), (3107, 5103), (3159, 5019)]