21398971

素因数分解:

${\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:243

約数の個数: 24

約数和(自身を含む): 25395552

約数和(自身を除く): 3996581

約数列:

[1, 11, 17, 101, 103, 121, 187, 1111, 1133, 1717, 1751, 2057, 10403, 12221, 12463, 18887, 19261, 114433, 176851, 207757, 211871, 1258763, 1945361, 21398971]

約数ペア:

[(1, 21398971), (11, 1945361), (17, 1258763), (101, 211871), (103, 207757), (121, 176851), (187, 114433), (1111, 19261), (1133, 18887), (1717, 12463), (1751, 12221), (2057, 10403)]