21719446

素因数分解:

$2^1\times 7^4\times {\mathrm{4523}}^1$

素因数の和:4553

約数の個数: 20

約数和(自身を含む): 38015172

約数和(自身を除く): 16295726

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 2401, 4523, 4802, 9046, 31661, 63322, 221627, 443254, 1551389, 3102778, 10859723, 21719446]

約数ペア:

[(1, 21719446), (2, 10859723), (7, 3102778), (14, 1551389), (49, 443254), (98, 221627), (343, 63322), (686, 31661), (2401, 9046), (4523, 4802)]