25256985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 48625920

約数和(自身を除く): 23368935

約数列:

[1, 3, 5, 13, 15, 17, 19, 39, 51, 57, 65, 85, 95, 195, 221, 247, 255, 285, 323, 401, 663, 741, 969, 1105, 1203, 1235, 1615, 2005, 3315, 3705, 4199, 4845, 5213, 6015, 6817, 7619, 12597, 15639, 20451, 20995, 22857, 26065, 34085, 38095, 62985, 78195, 88621, 99047, 102255, 114285, 129523, 265863, 297141, 388569, 443105, 495235, 647615, 1329315, 1485705, 1683799, 1942845, 5051397, 8418995, 25256985]

約数ペア:

[(1, 25256985), (3, 8418995), (5, 5051397), (13, 1942845), (15, 1683799), (17, 1485705), (19, 1329315), (39, 647615), (51, 495235), (57, 443105), (65, 388569), (85, 297141), (95, 265863), (195, 129523), (221, 114285), (247, 102255), (255, 99047), (285, 88621), (323, 78195), (401, 62985), (663, 38095), (741, 34085), (969, 26065), (1105, 22857), (1203, 20995), (1235, 20451), (1615, 15639), (2005, 12597), (3315, 7619), (3705, 6817), (4199, 6015), (4845, 5213)]