20015578

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 33800832

約数和(自身を除く): 13785254

約数列:

[1, 2, 11, 22, 73, 103, 121, 146, 206, 242, 803, 1133, 1331, 1606, 2266, 2662, 7519, 8833, 12463, 15038, 17666, 24926, 82709, 97163, 137093, 165418, 194326, 274186, 909799, 1819598, 10007789, 20015578]

約数ペア:

[(1, 20015578), (2, 10007789), (11, 1819598), (22, 909799), (73, 274186), (103, 194326), (121, 165418), (146, 137093), (206, 97163), (242, 82709), (803, 24926), (1133, 17666), (1331, 15038), (1606, 12463), (2266, 8833), (2662, 7519)]