20938965

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19661}}^1$

素因数の和:19740

約数の個数: 16

約数和(自身を含む): 33975936

約数和(自身を除く): 13036971

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19661, 58983, 98305, 294915, 1395931, 4187793, 6979655, 20938965]

約数ペア:

[(1, 20938965), (3, 6979655), (5, 4187793), (15, 1395931), (71, 294915), (213, 98305), (355, 58983), (1065, 19661)]