18693909

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{433}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 30878232

約数和(自身を除く): 12184323

約数列:

[1, 3, 9, 13, 27, 39, 41, 81, 117, 123, 351, 369, 433, 533, 1053, 1107, 1299, 1599, 3321, 3897, 4797, 5629, 11691, 14391, 16887, 17753, 35073, 43173, 50661, 53259, 151983, 159777, 230789, 455949, 479331, 692367, 1437993, 2077101, 6231303, 18693909]

約数ペア:

[(1, 18693909), (3, 6231303), (9, 2077101), (13, 1437993), (27, 692367), (39, 479331), (41, 455949), (81, 230789), (117, 159777), (123, 151983), (351, 53259), (369, 50661), (433, 43173), (533, 35073), (1053, 17753), (1107, 16887), (1299, 14391), (1599, 11691), (3321, 5629), (3897, 4797)]