19899412

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29437}}^1$

素因数の和:29467

約数の個数: 18

約数和(自身を含む): 37710078

約数和(自身を除く): 17810666

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 29437, 58874, 117748, 382681, 765362, 1530724, 4974853, 9949706, 19899412]

約数ペア:

[(1, 19899412), (2, 9949706), (4, 4974853), (13, 1530724), (26, 765362), (52, 382681), (169, 117748), (338, 58874), (676, 29437)]