20580973

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:532

約数の個数: 16

約数和(自身を含む): 24137344

約数和(自身を除く): 3556371

約数列:

[1, 7, 61, 157, 307, 427, 1099, 2149, 9577, 18727, 48199, 67039, 131089, 337393, 2940139, 20580973]

約数ペア:

[(1, 20580973), (7, 2940139), (61, 337393), (157, 131089), (307, 67039), (427, 48199), (1099, 18727), (2149, 9577)]