2811215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:742

約数の個数: 16

約数和(自身を含む): 3732480

約数和(自身を除く): 921265

約数列:

[1, 5, 11, 55, 79, 395, 647, 869, 3235, 4345, 7117, 35585, 51113, 255565, 562243, 2811215]

約数ペア:

[(1, 2811215), (5, 562243), (11, 255565), (55, 51113), (79, 35585), (395, 7117), (647, 4345), (869, 3235)]