21968265

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{631}}^1$

素因数の和:861

約数の個数: 32

約数和(自身を含む): 38587392

約数和(自身を除く): 16619127

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 211, 631, 633, 1055, 1893, 2321, 3155, 3165, 6941, 6963, 9465, 11605, 20823, 34705, 34815, 104115, 133141, 399423, 665705, 1464551, 1997115, 4393653, 7322755, 21968265]

約数ペア:

[(1, 21968265), (3, 7322755), (5, 4393653), (11, 1997115), (15, 1464551), (33, 665705), (55, 399423), (165, 133141), (211, 104115), (631, 34815), (633, 34705), (1055, 20823), (1893, 11605), (2321, 9465), (3155, 6963), (3165, 6941)]