28942225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 42011200

約数和(自身を除く): 13068975

約数列:

[1, 5, 13, 19, 25, 43, 65, 95, 109, 215, 247, 325, 475, 545, 559, 817, 1075, 1235, 1417, 2071, 2725, 2795, 4085, 4687, 6175, 7085, 10355, 10621, 13975, 20425, 23435, 26923, 35425, 51775, 53105, 60931, 89053, 117175, 134615, 265525, 304655, 445265, 673075, 1157689, 1523275, 2226325, 5788445, 28942225]

約数ペア:

[(1, 28942225), (5, 5788445), (13, 2226325), (19, 1523275), (25, 1157689), (43, 673075), (65, 445265), (95, 304655), (109, 265525), (215, 134615), (247, 117175), (325, 89053), (475, 60931), (545, 53105), (559, 51775), (817, 35425), (1075, 26923), (1235, 23435), (1417, 20425), (2071, 13975), (2725, 10621), (2795, 10355), (4085, 7085), (4687, 6175)]