2021121291

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3104641}}^1$

素因数の和:3104682

約数の個数: 16

約数和(自身を含む): 3179153408

約数和(自身を除く): 1158032117

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 3104641, 9313923, 21732487, 65197461, 96243871, 288731613, 673707097, 2021121291]

約数ペア:

[(1, 2021121291), (3, 673707097), (7, 288731613), (21, 96243871), (31, 65197461), (93, 21732487), (217, 9313923), (651, 3104641)]