20516272

素因数分解:

$2^4\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2207}}^1$

素因数の和:2305

約数の個数: 40

約数和(自身を含む): 45997056

約数和(自身を除く): 25480784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 83, 112, 166, 332, 581, 664, 1162, 1328, 2207, 2324, 4414, 4648, 8828, 9296, 15449, 17656, 30898, 35312, 61796, 123592, 183181, 247184, 366362, 732724, 1282267, 1465448, 2564534, 2930896, 5129068, 10258136, 20516272]

約数ペア:

[(1, 20516272), (2, 10258136), (4, 5129068), (7, 2930896), (8, 2564534), (14, 1465448), (16, 1282267), (28, 732724), (56, 366362), (83, 247184), (112, 183181), (166, 123592), (332, 61796), (581, 35312), (664, 30898), (1162, 17656), (1328, 15449), (2207, 9296), (2324, 8828), (4414, 4648)]