19985577

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{929}}^1$

素因数の和:1104

約数の個数: 16

約数和(自身を含む): 27319680

約数和(自身を除く): 7334103

約数列:

[1, 3, 71, 101, 213, 303, 929, 2787, 7171, 21513, 65959, 93829, 197877, 281487, 6661859, 19985577]

約数ペア:

[(1, 19985577), (3, 6661859), (71, 281487), (101, 197877), (213, 93829), (303, 65959), (929, 21513), (2787, 7171)]