19987101

素因数分解:

$3^3\times {\mathrm{113}}^1\times {\mathrm{6551}}^1$

素因数の和:6673

約数の個数: 16

約数和(自身を含む): 29877120

約数和(自身を除く): 9890019

約数列:

[1, 3, 9, 27, 113, 339, 1017, 3051, 6551, 19653, 58959, 176877, 740263, 2220789, 6662367, 19987101]

約数ペア:

[(1, 19987101), (3, 6662367), (9, 2220789), (27, 740263), (113, 176877), (339, 58959), (1017, 19653), (3051, 6551)]