21528783

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{3803}}^1$

素因数の和:3863

約数の個数: 24

約数和(自身を含む): 33825168

約数和(自身を除く): 12296385

約数列:

[1, 3, 9, 17, 37, 51, 111, 153, 333, 629, 1887, 3803, 5661, 11409, 34227, 64651, 140711, 193953, 422133, 581859, 1266399, 2392087, 7176261, 21528783]

約数ペア:

[(1, 21528783), (3, 7176261), (9, 2392087), (17, 1266399), (37, 581859), (51, 422133), (111, 193953), (153, 140711), (333, 64651), (629, 34227), (1887, 11409), (3803, 5661)]