20291206355

素因数分解:

$5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{239}}^1\times {\mathrm{18517}}^1$

素因数の和:18899

約数の個数: 32

約数和(自身を含む): 28159211520

約数和(自身を除く): 7868005165

約数列:

[1, 5, 7, 35, 131, 239, 655, 917, 1195, 1673, 4585, 8365, 18517, 31309, 92585, 129619, 156545, 219163, 648095, 1095815, 2425727, 4425563, 12128635, 16980089, 22127815, 30978941, 84900445, 154894705, 579748753, 2898743765, 4058241271, 20291206355]

約数ペア:

[(1, 20291206355), (5, 4058241271), (7, 2898743765), (35, 579748753), (131, 154894705), (239, 84900445), (655, 30978941), (917, 22127815), (1195, 16980089), (1673, 12128635), (4585, 4425563), (8365, 2425727), (18517, 1095815), (31309, 648095), (92585, 219163), (129619, 156545)]