31438449

素因数分解:

$3^4\times 7^2\times {\mathrm{89}}^2$

素因数の和:204

約数の個数: 45

約数和(自身を含む): 55251867

約数和(自身を除く): 23813418

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 89, 147, 189, 267, 441, 567, 623, 801, 1323, 1869, 2403, 3969, 4361, 5607, 7209, 7921, 13083, 16821, 23763, 39249, 50463, 55447, 71289, 117747, 166341, 213867, 353241, 388129, 499023, 641601, 1164387, 1497069, 3493161, 4491207, 10479483, 31438449]

約数ペア:

[(1, 31438449), (3, 10479483), (7, 4491207), (9, 3493161), (21, 1497069), (27, 1164387), (49, 641601), (63, 499023), (81, 388129), (89, 353241), (147, 213867), (189, 166341), (267, 117747), (441, 71289), (567, 55447), (623, 50463), (801, 39249), (1323, 23763), (1869, 16821), (2403, 13083), (3969, 7921), (4361, 7209)]