814820

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 1729728

約数和(自身を除く): 914908

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 311, 524, 622, 655, 1244, 1310, 1555, 2620, 3110, 6220, 40741, 81482, 162964, 203705, 407410, 814820]

約数ペア:

[(1, 814820), (2, 407410), (4, 203705), (5, 162964), (10, 81482), (20, 40741), (131, 6220), (262, 3110), (311, 2620), (524, 1555), (622, 1310), (655, 1244)]