20904207

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{1801}}^1$

素因数の和:1930

約数の個数: 16

約数和(自身を含む): 28803168

約数和(自身を除く): 7898961

約数列:

[1, 3, 53, 73, 159, 219, 1801, 3869, 5403, 11607, 95453, 131473, 286359, 394419, 6968069, 20904207]

約数ペア:

[(1, 20904207), (3, 6968069), (53, 394419), (73, 286359), (159, 131473), (219, 95453), (1801, 11607), (3869, 5403)]