21681693

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{563}}^1$

素因数の和:969

約数の個数: 24

約数和(自身を含む): 34313760

約数和(自身を除く): 12632067

約数列:

[1, 3, 9, 11, 33, 99, 389, 563, 1167, 1689, 3501, 4279, 5067, 6193, 12837, 18579, 38511, 55737, 219007, 657021, 1971063, 2409077, 7227231, 21681693]

約数ペア:

[(1, 21681693), (3, 7227231), (9, 2409077), (11, 1971063), (33, 657021), (99, 219007), (389, 55737), (563, 38511), (1167, 18579), (1689, 12837), (3501, 6193), (4279, 5067)]