18946811

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:430

約数の個数: 16

約数和(自身を含む): 21065184

約数和(自身を除く): 2118373

約数列:

[1, 13, 53, 107, 257, 689, 1391, 3341, 5671, 13621, 27499, 73723, 177073, 357487, 1457447, 18946811]

約数ペア:

[(1, 18946811), (13, 1457447), (53, 357487), (107, 177073), (257, 73723), (689, 27499), (1391, 13621), (3341, 5671)]