21699531

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{20261}}^1$

素因数の和:20291

約数の個数: 24

約数和(自身を含む): 37930464

約数和(自身を除く): 16230933

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 20261, 60783, 141827, 182349, 344437, 425481, 1033311, 1276443, 2411059, 3099933, 7233177, 21699531]

約数ペア:

[(1, 21699531), (3, 7233177), (7, 3099933), (9, 2411059), (17, 1276443), (21, 1033311), (51, 425481), (63, 344437), (119, 182349), (153, 141827), (357, 60783), (1071, 20261)]