21025839

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1\times {\mathrm{419}}^1$

素因数の和:854

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 7802961

約数列:

[1, 3, 43, 129, 389, 419, 1167, 1257, 16727, 18017, 50181, 54051, 162991, 488973, 7008613, 21025839]

約数ペア:

[(1, 21025839), (3, 7008613), (43, 488973), (129, 162991), (389, 54051), (419, 50181), (1167, 18017), (1257, 16727)]