20428724

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{691}}^1$

素因数の和:1103

約数の個数: 24

約数和(自身を含む): 37783200

約数和(自身を除く): 17354476

約数列:

[1, 2, 4, 19, 38, 76, 389, 691, 778, 1382, 1556, 2764, 7391, 13129, 14782, 26258, 29564, 52516, 268799, 537598, 1075196, 5107181, 10214362, 20428724]

約数ペア:

[(1, 20428724), (2, 10214362), (4, 5107181), (19, 1075196), (38, 537598), (76, 268799), (389, 52516), (691, 29564), (778, 26258), (1382, 14782), (1556, 13129), (2764, 7391)]