6639775

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{919}}^1$

素因数の和:963

約数の個数: 18

約数和(自身を含む): 8755640

約数和(自身を除く): 2115865

約数列:

[1, 5, 17, 25, 85, 289, 425, 919, 1445, 4595, 7225, 15623, 22975, 78115, 265591, 390575, 1327955, 6639775]

約数ペア:

[(1, 6639775), (5, 1327955), (17, 390575), (25, 265591), (85, 78115), (289, 22975), (425, 15623), (919, 7225), (1445, 4595)]