720153

素因数分解:

$3^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:114

約数の個数: 36

約数和(自身を含む): 1280448

約数和(自身を除く): 560295

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 71, 147, 161, 207, 213, 441, 483, 497, 639, 1127, 1449, 1491, 1633, 3381, 3479, 4473, 4899, 10143, 10437, 11431, 14697, 31311, 34293, 80017, 102879, 240051, 720153]

約数ペア:

[(1, 720153), (3, 240051), (7, 102879), (9, 80017), (21, 34293), (23, 31311), (49, 14697), (63, 11431), (69, 10437), (71, 10143), (147, 4899), (161, 4473), (207, 3479), (213, 3381), (441, 1633), (483, 1491), (497, 1449), (639, 1127)]