664890921

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{509}}^1\times {\mathrm{7639}}^1$

素因数の和:8173

約数の個数: 24

約数和(自身を含む): 1013064000

約数和(自身を除く): 348173079

約数列:

[1, 3, 9, 19, 57, 171, 509, 1527, 4581, 7639, 9671, 22917, 29013, 68751, 87039, 145141, 435423, 1306269, 3888251, 11664753, 34994259, 73876769, 221630307, 664890921]

約数ペア:

[(1, 664890921), (3, 221630307), (9, 73876769), (19, 34994259), (57, 11664753), (171, 3888251), (509, 1306269), (1527, 435423), (4581, 145141), (7639, 87039), (9671, 68751), (22917, 29013)]