21825855

素因数分解:

$3^4\times 5^1\times {\mathrm{53891}}^1$

素因数の和:53908

約数の個数: 20

約数和(自身を含む): 39125592

約数和(自身を除く): 17299737

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53891, 161673, 269455, 485019, 808365, 1455057, 2425095, 4365171, 7275285, 21825855]

約数ペア:

[(1, 21825855), (3, 7275285), (5, 4365171), (9, 2425095), (15, 1455057), (27, 808365), (45, 485019), (81, 269455), (135, 161673), (405, 53891)]