21909130

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 18526070

約数列:

[1, 2, 5, 10, 89, 103, 178, 206, 239, 445, 478, 515, 890, 1030, 1195, 2390, 9167, 18334, 21271, 24617, 42542, 45835, 49234, 91670, 106355, 123085, 212710, 246170, 2190913, 4381826, 10954565, 21909130]

約数ペア:

[(1, 21909130), (2, 10954565), (5, 4381826), (10, 2190913), (89, 246170), (103, 212710), (178, 123085), (206, 106355), (239, 91670), (445, 49234), (478, 45835), (515, 42542), (890, 24617), (1030, 21271), (1195, 18334), (2390, 9167)]