21053133

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{701}}^1$

素因数の和:825

約数の個数: 24

約数和(自身を含む): 31539456

約数和(自身を除く): 10486323

約数列:

[1, 3, 9, 47, 71, 141, 213, 423, 639, 701, 2103, 3337, 6309, 10011, 30033, 32947, 49771, 98841, 149313, 296523, 447939, 2339237, 7017711, 21053133]

約数ペア:

[(1, 21053133), (3, 7017711), (9, 2339237), (47, 447939), (71, 296523), (141, 149313), (213, 98841), (423, 49771), (639, 32947), (701, 30033), (2103, 10011), (3337, 6309)]