21816641

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{673}}^1$

素因数の和:1112

約数の個数: 16

約数和(自身を含む): 27305088

約数和(自身を除く): 5488447

約数列:

[1, 7, 11, 77, 421, 673, 2947, 4631, 4711, 7403, 32417, 51821, 283333, 1983331, 3116663, 21816641]

約数ペア:

[(1, 21816641), (7, 3116663), (11, 1983331), (77, 283333), (421, 51821), (673, 32417), (2947, 7403), (4631, 4711)]