21554393

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1399}}^1$

素因数の和:1508

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 4250407

約数列:

[1, 7, 31, 71, 217, 497, 1399, 2201, 9793, 15407, 43369, 99329, 303583, 695303, 3079199, 21554393]

約数ペア:

[(1, 21554393), (7, 3079199), (31, 695303), (71, 303583), (217, 99329), (497, 43369), (1399, 15407), (2201, 9793)]