21427637

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{661}}^1$

素因数の和:1100

約数の個数: 16

約数和(自身を含む): 26818944

約数和(自身を除く): 5391307

約数列:

[1, 7, 11, 77, 421, 661, 2947, 4627, 4631, 7271, 32417, 50897, 278281, 1947967, 3061091, 21427637]

約数ペア:

[(1, 21427637), (7, 3061091), (11, 1947967), (77, 278281), (421, 50897), (661, 32417), (2947, 7271), (4627, 4631)]