20821549

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{9209}}^1$

素因数の和:9252

約数の個数: 16

約数和(自身を含む): 26524800

約数和(自身を除く): 5703251

約数列:

[1, 7, 17, 19, 119, 133, 323, 2261, 9209, 64463, 156553, 174971, 1095871, 1224797, 2974507, 20821549]

約数ペア:

[(1, 20821549), (7, 2974507), (17, 1224797), (19, 1095871), (119, 174971), (133, 156553), (323, 64463), (2261, 9209)]