19906991999

素因数分解:

${\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{77261}}^1$

素因数の和:77542

約数の個数: 16

約数和(自身を含む): 21361397760

約数和(自身を除く): 1454405761

約数列:

[1, 19, 71, 191, 1349, 3629, 13561, 77261, 257659, 1467959, 5485531, 14756851, 104225089, 280380169, 1047736421, 19906991999]

約数ペア:

[(1, 19906991999), (19, 1047736421), (71, 280380169), (191, 104225089), (1349, 14756851), (3629, 5485531), (13561, 1467959), (77261, 257659)]