721508742

素因数分解:

$2^1\times 3^3\times {\mathrm{163}}^1\times {\mathrm{81971}}^1$

素因数の和:82145

約数の個数: 32

約数和(自身を含む): 1613208960

約数和(自身を除く): 891700218

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 163, 326, 489, 978, 1467, 2934, 4401, 8802, 81971, 163942, 245913, 491826, 737739, 1475478, 2213217, 4426434, 13361273, 26722546, 40083819, 80167638, 120251457, 240502914, 360754371, 721508742]

約数ペア:

[(1, 721508742), (2, 360754371), (3, 240502914), (6, 120251457), (9, 80167638), (18, 40083819), (27, 26722546), (54, 13361273), (163, 4426434), (326, 2213217), (489, 1475478), (978, 737739), (1467, 491826), (2934, 245913), (4401, 163942), (8802, 81971)]