290400019

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{709}}^1$

素因数の和:1379

約数の個数: 24

約数和(自身を含む): 364877520

約数和(自身を除く): 74477501

約数列:

[1, 7, 13, 49, 91, 637, 643, 709, 4501, 4963, 8359, 9217, 31507, 34741, 58513, 64519, 409591, 451633, 455887, 3191209, 5926531, 22338463, 41485717, 290400019]

約数ペア:

[(1, 290400019), (7, 41485717), (13, 22338463), (49, 5926531), (91, 3191209), (637, 455887), (643, 451633), (709, 409591), (4501, 64519), (4963, 58513), (8359, 34741), (9217, 31507)]