19962495

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 39936000

約数和(自身を除く): 19973505

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 127, 315, 381, 499, 635, 889, 1143, 1497, 1905, 2495, 2667, 3493, 4445, 4491, 5715, 7485, 8001, 10479, 13335, 17465, 22455, 31437, 40005, 52395, 63373, 157185, 190119, 316865, 443611, 570357, 950595, 1330833, 2218055, 2851785, 3992499, 6654165, 19962495]

約数ペア:

[(1, 19962495), (3, 6654165), (5, 3992499), (7, 2851785), (9, 2218055), (15, 1330833), (21, 950595), (35, 570357), (45, 443611), (63, 316865), (105, 190119), (127, 157185), (315, 63373), (381, 52395), (499, 40005), (635, 31437), (889, 22455), (1143, 17465), (1497, 13335), (1905, 10479), (2495, 8001), (2667, 7485), (3493, 5715), (4445, 4491)]