28257645

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 49963392

約数和(自身を除く): 21705747

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 157, 169, 195, 213, 355, 471, 507, 785, 845, 923, 1065, 2041, 2355, 2535, 2769, 4615, 6123, 10205, 11147, 11999, 13845, 26533, 30615, 33441, 35997, 55735, 59995, 79599, 132665, 144911, 167205, 179985, 397995, 434733, 724555, 1883843, 2173665, 5651529, 9419215, 28257645]

約数ペア:

[(1, 28257645), (3, 9419215), (5, 5651529), (13, 2173665), (15, 1883843), (39, 724555), (65, 434733), (71, 397995), (157, 179985), (169, 167205), (195, 144911), (213, 132665), (355, 79599), (471, 59995), (507, 55735), (785, 35997), (845, 33441), (923, 30615), (1065, 26533), (2041, 13845), (2355, 11999), (2535, 11147), (2769, 10205), (4615, 6123)]