20217813

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{87523}}^1$

素因数の和:87544

約数の個数: 16

約数和(自身を含む): 33609216

約数和(自身を除く): 13391403

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 87523, 262569, 612661, 962753, 1837983, 2888259, 6739271, 20217813]

約数ペア:

[(1, 20217813), (3, 6739271), (7, 2888259), (11, 1837983), (21, 962753), (33, 612661), (77, 262569), (231, 87523)]