28276731

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23623}}^1$

素因数の和:23655

約数の個数: 24

約数和(自身を含む): 49137920

約数和(自身を除く): 20861189

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 23623, 70869, 165361, 212607, 448837, 496083, 1346511, 1488249, 3141859, 4039533, 9425577, 28276731]

約数ペア:

[(1, 28276731), (3, 9425577), (7, 4039533), (9, 3141859), (19, 1488249), (21, 1346511), (57, 496083), (63, 448837), (133, 212607), (171, 165361), (399, 70869), (1197, 23623)]