20269015

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{83}}^1$

素因数の和:148

約数の個数: 36

約数和(自身を含む): 28315224

約数和(自身を除く): 8046209

約数列:

[1, 5, 13, 17, 65, 83, 85, 169, 221, 289, 415, 845, 1079, 1105, 1411, 1445, 2873, 3757, 5395, 7055, 14027, 14365, 18343, 18785, 23987, 48841, 70135, 91715, 119935, 238459, 244205, 311831, 1192295, 1559155, 4053803, 20269015]

約数ペア:

[(1, 20269015), (5, 4053803), (13, 1559155), (17, 1192295), (65, 311831), (83, 244205), (85, 238459), (169, 119935), (221, 91715), (289, 70135), (415, 48841), (845, 23987), (1079, 18785), (1105, 18343), (1411, 14365), (1445, 14027), (2873, 7055), (3757, 5395)]