21281117

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 25650912

約数和(自身を除く): 4369795

約数列:

[1, 11, 13, 83, 121, 143, 163, 913, 1079, 1573, 1793, 2119, 10043, 11869, 13529, 19723, 23309, 130559, 148819, 175877, 256399, 1637009, 1934647, 21281117]

約数ペア:

[(1, 21281117), (11, 1934647), (13, 1637009), (83, 256399), (121, 175877), (143, 148819), (163, 130559), (913, 23309), (1079, 19723), (1573, 13529), (1793, 11869), (2119, 10043)]