21279901281

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{1229981}}^1$

素因数の和:1230136

約数の個数: 16

約数和(自身を含む): 29125973760

約数和(自身を除く): 7846072479

約数列:

[1, 3, 73, 79, 219, 237, 5767, 17301, 1229981, 3689943, 89788613, 97168499, 269365839, 291505497, 7093300427, 21279901281]

約数ペア:

[(1, 21279901281), (3, 7093300427), (73, 291505497), (79, 269365839), (219, 97168499), (237, 89788613), (5767, 3689943), (17301, 1229981)]