19987910

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{48751}}^1$

素因数の和:48799

約数の個数: 16

約数和(自身を含む): 36856512

約数和(自身を除く): 16868602

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 48751, 97502, 243755, 487510, 1998791, 3997582, 9993955, 19987910]

約数ペア:

[(1, 19987910), (2, 9993955), (5, 3997582), (10, 1998791), (41, 487510), (82, 243755), (205, 97502), (410, 48751)]