640804547997

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{419}}^1\times {\mathrm{3206219}}^1$

素因数の和:3206697

約数の個数: 24

約数和(自身を含む): 945321904800

約数和(自身を除く): 304517356803

約数列:

[1, 3, 9, 53, 159, 419, 477, 1257, 3771, 22207, 66621, 199863, 3206219, 9618657, 28855971, 169929607, 509788821, 1343405761, 1529366463, 4030217283, 12090651849, 71200505333, 213601515999, 640804547997]

約数ペア:

[(1, 640804547997), (3, 213601515999), (9, 71200505333), (53, 12090651849), (159, 4030217283), (419, 1529366463), (477, 1343405761), (1257, 509788821), (3771, 169929607), (22207, 28855971), (66621, 9618657), (199863, 3206219)]