42720321

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{43283}}^1$

素因数の和:43340

約数の個数: 16

約数和(自身を含む): 66484224

約数和(自身を除く): 23763903

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 43283, 129849, 302981, 908943, 2034301, 6102903, 14240107, 42720321]

約数ペア:

[(1, 42720321), (3, 14240107), (7, 6102903), (21, 2034301), (47, 908943), (141, 302981), (329, 129849), (987, 43283)]