20020475

素因数分解:

$5^2\times {\mathrm{17}}^3\times {\mathrm{163}}^1$

素因数の和:224

約数の個数: 24

約数和(自身を含む): 26538480

約数和(自身を除く): 6518005

約数列:

[1, 5, 17, 25, 85, 163, 289, 425, 815, 1445, 2771, 4075, 4913, 7225, 13855, 24565, 47107, 69275, 122825, 235535, 800819, 1177675, 4004095, 20020475]

約数ペア:

[(1, 20020475), (5, 4004095), (17, 1177675), (25, 800819), (85, 235535), (163, 122825), (289, 69275), (425, 47107), (815, 24565), (1445, 13855), (2771, 7225), (4075, 4913)]