21721479

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{15053}}^1$

素因数の和:15106

約数の個数: 16

約数和(自身を含む): 32034912

約数和(自身を除く): 10313433

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 15053, 45159, 195689, 556961, 587067, 1670883, 7240493, 21721479]

約数ペア:

[(1, 21721479), (3, 7240493), (13, 1670883), (37, 587067), (39, 556961), (111, 195689), (481, 45159), (1443, 15053)]