25740020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 55883520

約数和(自身を除く): 30143500

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 139, 188, 197, 235, 278, 394, 470, 556, 695, 788, 940, 985, 1390, 1970, 2780, 3940, 6533, 9259, 13066, 18518, 26132, 27383, 32665, 37036, 46295, 54766, 65330, 92590, 109532, 130660, 136915, 185180, 273830, 547660, 1287001, 2574002, 5148004, 6435005, 12870010, 25740020]

約数ペア:

[(1, 25740020), (2, 12870010), (4, 6435005), (5, 5148004), (10, 2574002), (20, 1287001), (47, 547660), (94, 273830), (139, 185180), (188, 136915), (197, 130660), (235, 109532), (278, 92590), (394, 65330), (470, 54766), (556, 46295), (695, 37036), (788, 32665), (940, 27383), (985, 26132), (1390, 18518), (1970, 13066), (2780, 9259), (3940, 6533)]