28828905

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 54621504

約数和(自身を除く): 25792599

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 61, 105, 147, 183, 245, 305, 427, 643, 735, 915, 1281, 1929, 2135, 2989, 3215, 4501, 6405, 8967, 9645, 13503, 14945, 22505, 31507, 39223, 44835, 67515, 94521, 117669, 157535, 196115, 274561, 472605, 588345, 823683, 1372805, 1921927, 4118415, 5765781, 9609635, 28828905]

約数ペア:

[(1, 28828905), (3, 9609635), (5, 5765781), (7, 4118415), (15, 1921927), (21, 1372805), (35, 823683), (49, 588345), (61, 472605), (105, 274561), (147, 196115), (183, 157535), (245, 117669), (305, 94521), (427, 67515), (643, 44835), (735, 39223), (915, 31507), (1281, 22505), (1929, 14945), (2135, 13503), (2989, 9645), (3215, 8967), (4501, 6405)]