20991318

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{152111}}^1$

素因数の和:152139

約数の個数: 16

約数和(自身を含む): 43808256

約数和(自身を除く): 22816938

約数列:

[1, 2, 3, 6, 23, 46, 69, 138, 152111, 304222, 456333, 912666, 3498553, 6997106, 10495659, 20991318]

約数ペア:

[(1, 20991318), (2, 10495659), (3, 6997106), (6, 3498553), (23, 912666), (46, 456333), (69, 304222), (138, 152111)]