20117997

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 30902400

約数和(自身を除く): 10784403

約数列:

[1, 3, 9, 27, 59, 73, 173, 177, 219, 519, 531, 657, 1557, 1593, 1971, 4307, 4671, 10207, 12629, 12921, 30621, 37887, 38763, 91863, 113661, 116289, 275589, 340983, 745111, 2235333, 6705999, 20117997]

約数ペア:

[(1, 20117997), (3, 6705999), (9, 2235333), (27, 745111), (59, 340983), (73, 275589), (173, 116289), (177, 113661), (219, 91863), (519, 38763), (531, 37887), (657, 30621), (1557, 12921), (1593, 12629), (1971, 10207), (4307, 4671)]