18979259

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{547}}^1$

素因数の和:734

約数の個数: 16

約数和(自身を含む): 21819168

約数和(自身を除く): 2839909

約数列:

[1, 13, 17, 157, 221, 547, 2041, 2669, 7111, 9299, 34697, 85879, 120887, 1116427, 1459943, 18979259]

約数ペア:

[(1, 18979259), (13, 1459943), (17, 1116427), (157, 120887), (221, 85879), (547, 34697), (2041, 9299), (2669, 7111)]