20646921

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{739}}^1$

素因数の和:948

約数の個数: 16

約数和(自身を含む): 28179200

約数和(自身を除く): 7532279

約数列:

[1, 3, 67, 139, 201, 417, 739, 2217, 9313, 27939, 49513, 102721, 148539, 308163, 6882307, 20646921]

約数ペア:

[(1, 20646921), (3, 6882307), (67, 308163), (139, 148539), (201, 102721), (417, 49513), (739, 27939), (2217, 9313)]