253996845

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{21737}}^1$

素因数の和:21805

約数の個数: 32

約数和(自身を含む): 438238080

約数和(自身を除く): 184241235

約数列:

[1, 3, 5, 15, 19, 41, 57, 95, 123, 205, 285, 615, 779, 2337, 3895, 11685, 21737, 65211, 108685, 326055, 413003, 891217, 1239009, 2065015, 2673651, 4456085, 6195045, 13368255, 16933123, 50799369, 84665615, 253996845]

約数ペア:

[(1, 253996845), (3, 84665615), (5, 50799369), (15, 16933123), (19, 13368255), (41, 6195045), (57, 4456085), (95, 2673651), (123, 2065015), (205, 1239009), (285, 891217), (615, 413003), (779, 326055), (2337, 108685), (3895, 65211), (11685, 21737)]