21228537

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13687}}^1$

素因数の和:13748

約数の個数: 16

約数和(自身を含む): 31537152

約数和(自身を除く): 10308615

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13687, 41061, 150557, 451671, 643289, 1929867, 7076179, 21228537]

約数ペア:

[(1, 21228537), (3, 7076179), (11, 1929867), (33, 643289), (47, 451671), (141, 150557), (517, 41061), (1551, 13687)]