21386953

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1733}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 25635456

約数和(自身を除く): 4248503

約数列:

[1, 7, 41, 43, 287, 301, 1733, 1763, 12131, 12341, 71053, 74519, 497371, 521633, 3055279, 21386953]

約数ペア:

[(1, 21386953), (7, 3055279), (41, 521633), (43, 497371), (287, 74519), (301, 71053), (1733, 12341), (1763, 12131)]