2640385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{787}}^1$

素因数の和:864

約数の個数: 16

約数和(自身を含む): 3517632

約数和(自身を除く): 877247

約数列:

[1, 5, 11, 55, 61, 305, 671, 787, 3355, 3935, 8657, 43285, 48007, 240035, 528077, 2640385]

約数ペア:

[(1, 2640385), (5, 528077), (11, 240035), (55, 48007), (61, 43285), (305, 8657), (671, 3935), (787, 3355)]