18312561

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:267

約数の個数: 40

約数和(自身を含む): 29369120

約数和(自身を除く): 11056559

約数列:

[1, 3, 9, 19, 27, 57, 73, 81, 163, 171, 219, 489, 513, 657, 1387, 1467, 1539, 1971, 3097, 4161, 4401, 5913, 9291, 11899, 12483, 13203, 27873, 35697, 37449, 83619, 107091, 112347, 226081, 250857, 321273, 678243, 963819, 2034729, 6104187, 18312561]

約数ペア:

[(1, 18312561), (3, 6104187), (9, 2034729), (19, 963819), (27, 678243), (57, 321273), (73, 250857), (81, 226081), (163, 112347), (171, 107091), (219, 83619), (489, 37449), (513, 35697), (657, 27873), (1387, 13203), (1467, 12483), (1539, 11899), (1971, 9291), (3097, 5913), (4161, 4401)]