20912012009

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2577593}}^1$

素因数の和:2577680

約数の個数: 16

約数和(自身を含む): 25569732480

約数和(自身を除く): 4657720471

約数列:

[1, 7, 19, 61, 133, 427, 1159, 8113, 2577593, 18043151, 48974267, 157233173, 342819869, 1100632211, 2987430287, 20912012009]

約数ペア:

[(1, 20912012009), (7, 2987430287), (19, 1100632211), (61, 342819869), (133, 157233173), (427, 48974267), (1159, 18043151), (8113, 2577593)]