18475209

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{13417}}^1$

素因数の和:13446

約数の個数: 20

約数和(自身を含む): 29224404

約数和(自身を除く): 10749195

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 13417, 40251, 120753, 228089, 362259, 684267, 1086777, 2052801, 6158403, 18475209]

約数ペア:

[(1, 18475209), (3, 6158403), (9, 2052801), (17, 1086777), (27, 684267), (51, 362259), (81, 228089), (153, 120753), (459, 40251), (1377, 13417)]