28520919

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23827}}^1$

素因数の和:23859

約数の個数: 24

約数和(自身を含む): 49562240

約数和(自身を除く): 21041321

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 23827, 71481, 166789, 214443, 452713, 500367, 1358139, 1501101, 3168991, 4074417, 9506973, 28520919]

約数ペア:

[(1, 28520919), (3, 9506973), (7, 4074417), (9, 3168991), (19, 1501101), (21, 1358139), (57, 500367), (63, 452713), (133, 214443), (171, 166789), (399, 71481), (1197, 23827)]