19975761

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{56911}}^1$

素因数の和:56933

約数の個数: 16

約数和(自身を含む): 31870720

約数和(自身を除く): 11894959

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 56911, 170733, 512199, 739843, 1536597, 2219529, 6658587, 19975761]

約数ペア:

[(1, 19975761), (3, 6658587), (9, 2219529), (13, 1536597), (27, 739843), (39, 512199), (117, 170733), (351, 56911)]