28759521

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1471}}^1$

素因数の和:1514

約数の個数: 32

約数和(自身を含む): 47104000

約数和(自身を除く): 18344479

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1029, 1471, 2793, 4413, 6517, 10297, 19551, 27949, 30891, 72079, 83847, 195643, 216237, 504553, 586929, 1369501, 1513659, 4108503, 9586507, 28759521]

約数ペア:

[(1, 28759521), (3, 9586507), (7, 4108503), (19, 1513659), (21, 1369501), (49, 586929), (57, 504553), (133, 216237), (147, 195643), (343, 83847), (399, 72079), (931, 30891), (1029, 27949), (1471, 19551), (2793, 10297), (4413, 6517)]