20278115

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{359}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 8752285

約数列:

[1, 5, 11, 13, 55, 65, 79, 143, 359, 395, 715, 869, 1027, 1795, 3949, 4345, 4667, 5135, 11297, 19745, 23335, 28361, 51337, 56485, 141805, 256685, 311971, 368693, 1559855, 1843465, 4055623, 20278115]

約数ペア:

[(1, 20278115), (5, 4055623), (11, 1843465), (13, 1559855), (55, 368693), (65, 311971), (79, 256685), (143, 141805), (359, 56485), (395, 51337), (715, 28361), (869, 23335), (1027, 19745), (1795, 11297), (3949, 5135), (4345, 4667)]