81245421

素因数分解:

$3^2\times {\mathrm{107}}^1\times {\mathrm{239}}^1\times {\mathrm{353}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 119283840

約数和(自身を除く): 38038419

約数列:

[1, 3, 9, 107, 239, 321, 353, 717, 963, 1059, 2151, 3177, 25573, 37771, 76719, 84367, 113313, 230157, 253101, 339939, 759303, 9027269, 27081807, 81245421]

約数ペア:

[(1, 81245421), (3, 27081807), (9, 9027269), (107, 759303), (239, 339939), (321, 253101), (353, 230157), (717, 113313), (963, 84367), (1059, 76719), (2151, 37771), (3177, 25573)]