28707875

素因数分解:

$5^3\times 7^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 43037280

約数和(自身を除く): 14329405

約数列:

[1, 5, 7, 25, 35, 43, 49, 109, 125, 175, 215, 245, 301, 545, 763, 875, 1075, 1225, 1505, 2107, 2725, 3815, 4687, 5341, 5375, 6125, 7525, 10535, 13625, 19075, 23435, 26705, 32809, 37625, 52675, 95375, 117175, 133525, 164045, 229663, 263375, 585875, 667625, 820225, 1148315, 4101125, 5741575, 28707875]

約数ペア:

[(1, 28707875), (5, 5741575), (7, 4101125), (25, 1148315), (35, 820225), (43, 667625), (49, 585875), (109, 263375), (125, 229663), (175, 164045), (215, 133525), (245, 117175), (301, 95375), (545, 52675), (763, 37625), (875, 32809), (1075, 26705), (1225, 23435), (1505, 19075), (2107, 13625), (2725, 10535), (3815, 7525), (4687, 6125), (5341, 5375)]