21728261

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{911}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 24427008

約数和(自身を除く): 2698747

約数列:

[1, 17, 23, 61, 391, 911, 1037, 1403, 15487, 20953, 23851, 55571, 356201, 944707, 1278133, 21728261]

約数ペア:

[(1, 21728261), (17, 1278133), (23, 944707), (61, 356201), (391, 55571), (911, 23851), (1037, 20953), (1403, 15487)]