28020879

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{373}}^1\times {\mathrm{491}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 43057872

約数和(自身を除く): 15036993

約数列:

[1, 3, 9, 17, 51, 153, 373, 491, 1119, 1473, 3357, 4419, 6341, 8347, 19023, 25041, 57069, 75123, 183143, 549429, 1648287, 3113431, 9340293, 28020879]

約数ペア:

[(1, 28020879), (3, 9340293), (9, 3113431), (17, 1648287), (51, 549429), (153, 183143), (373, 75123), (491, 57069), (1119, 25041), (1473, 19023), (3357, 8347), (4419, 6341)]