28097881

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2861}}^1$

素因数の和:2952

約数の個数: 16

約数和(自身を含む): 34069248

約数和(自身を除く): 5971367

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2861, 9821, 20027, 65803, 174521, 460621, 1221647, 4013983, 28097881]

約数ペア:

[(1, 28097881), (7, 4013983), (23, 1221647), (61, 460621), (161, 174521), (427, 65803), (1403, 20027), (2861, 9821)]