21286737

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{373}}^2$

素因数の和:769

約数の個数: 18

約数和(自身を含む): 32643702

約数和(自身を除く): 11356965

約数列:

[1, 3, 9, 17, 51, 153, 373, 1119, 3357, 6341, 19023, 57069, 139129, 417387, 1252161, 2365193, 7095579, 21286737]

約数ペア:

[(1, 21286737), (3, 7095579), (9, 2365193), (17, 1252161), (51, 417387), (153, 139129), (373, 57069), (1119, 19023), (3357, 6341)]