21259342

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{3109}}^1$

素因数の和:3387

約数の個数: 16

約数和(自身を含む): 34483680

約数和(自身を除く): 13224338

約数列:

[1, 2, 13, 26, 263, 526, 3109, 3419, 6218, 6838, 40417, 80834, 817667, 1635334, 10629671, 21259342]

約数ペア:

[(1, 21259342), (2, 10629671), (13, 1635334), (26, 817667), (263, 80834), (526, 40417), (3109, 6838), (3419, 6218)]