28991313

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{181}}^1$

素因数の和:274

約数の個数: 36

約数和(自身を含む): 46605468

約数和(自身を除く): 17614155

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 181, 333, 481, 543, 1369, 1443, 1629, 2353, 4107, 4329, 6697, 7059, 12321, 17797, 20091, 21177, 53391, 60273, 87061, 160173, 247789, 261183, 743367, 783549, 2230101, 3221257, 9663771, 28991313]

約数ペア:

[(1, 28991313), (3, 9663771), (9, 3221257), (13, 2230101), (37, 783549), (39, 743367), (111, 261183), (117, 247789), (181, 160173), (333, 87061), (481, 60273), (543, 53391), (1369, 21177), (1443, 20091), (1629, 17797), (2353, 12321), (4107, 7059), (4329, 6697)]