28904911

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 33886720

約数和(自身を除く): 4981809

約数列:

[1, 7, 61, 139, 427, 487, 973, 3409, 8479, 29707, 59353, 67693, 207949, 473851, 4129273, 28904911]

約数ペア:

[(1, 28904911), (7, 4129273), (61, 473851), (139, 207949), (427, 67693), (487, 59353), (973, 29707), (3409, 8479)]