647558721

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{100913}}^1$

素因数の和:100973

約数の個数: 24

約数和(自身を含む): 1007525376

約数和(自身を除く): 359966655

約数列:

[1, 3, 9, 23, 31, 69, 93, 207, 279, 713, 2139, 6417, 100913, 302739, 908217, 2320999, 3128303, 6962997, 9384909, 20888991, 28154727, 71950969, 215852907, 647558721]

約数ペア:

[(1, 647558721), (3, 215852907), (9, 71950969), (23, 28154727), (31, 20888991), (69, 9384909), (93, 6962997), (207, 3128303), (279, 2320999), (713, 908217), (2139, 302739), (6417, 100913)]