208218171

素因数分解:

$3^1\times 7^1\times {\mathrm{521}}^1\times {\mathrm{19031}}^1$

素因数の和:19562

約数の個数: 16

約数和(自身を含む): 317910528

約数和(自身を除く): 109692357

約数列:

[1, 3, 7, 21, 521, 1563, 3647, 10941, 19031, 57093, 133217, 399651, 9915151, 29745453, 69406057, 208218171]

約数ペア:

[(1, 208218171), (3, 69406057), (7, 29745453), (21, 9915151), (521, 399651), (1563, 133217), (3647, 57093), (10941, 19031)]