21298473

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7193}}^1$

素因数の和:7253

約数の個数: 24

約数和(自身を含む): 35912448

約数和(自身を除く): 14613975

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7193, 21579, 50351, 64737, 151053, 338071, 453159, 1014213, 2366497, 3042639, 7099491, 21298473]

約数ペア:

[(1, 21298473), (3, 7099491), (7, 3042639), (9, 2366497), (21, 1014213), (47, 453159), (63, 338071), (141, 151053), (329, 64737), (423, 50351), (987, 21579), (2961, 7193)]