21970047

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{4409}}^1$

素因数の和:4574

約数の個数: 16

約数和(自身を含む): 32175360

約数和(自身を除く): 10205313

約数列:

[1, 3, 11, 33, 151, 453, 1661, 4409, 4983, 13227, 48499, 145497, 665759, 1997277, 7323349, 21970047]

約数ペア:

[(1, 21970047), (3, 7323349), (11, 1997277), (33, 665759), (151, 145497), (453, 48499), (1661, 13227), (4409, 4983)]