21246309

素因数分解:

$3^2\times 7^1\times {\mathrm{293}}^1\times {\mathrm{1151}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 35223552

約数和(自身を除く): 13977243

約数列:

[1, 3, 7, 9, 21, 63, 293, 879, 1151, 2051, 2637, 3453, 6153, 8057, 10359, 18459, 24171, 72513, 337243, 1011729, 2360701, 3035187, 7082103, 21246309]

約数ペア:

[(1, 21246309), (3, 7082103), (7, 3035187), (9, 2360701), (21, 1011729), (63, 337243), (293, 72513), (879, 24171), (1151, 18459), (2051, 10359), (2637, 8057), (3453, 6153)]