19869421

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 5290259

約数列:

[1, 11, 13, 19, 71, 103, 143, 209, 247, 781, 923, 1133, 1339, 1349, 1957, 2717, 7313, 10153, 14729, 14839, 17537, 21527, 25441, 80443, 95069, 138947, 192907, 279851, 1045759, 1528417, 1806311, 19869421]

約数ペア:

[(1, 19869421), (11, 1806311), (13, 1528417), (19, 1045759), (71, 279851), (103, 192907), (143, 138947), (209, 95069), (247, 80443), (781, 25441), (923, 21527), (1133, 17537), (1339, 14839), (1349, 14729), (1957, 10153), (2717, 7313)]