213480905

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{257}}^1\times {\mathrm{1373}}^1$

素因数の和:1657

約数の個数: 24

約数和(自身を含む): 282884616

約数和(自身を除く): 69403711

約数列:

[1, 5, 11, 55, 121, 257, 605, 1285, 1373, 2827, 6865, 14135, 15103, 31097, 75515, 155485, 166133, 352861, 830665, 1764305, 3881471, 19407355, 42696181, 213480905]

約数ペア:

[(1, 213480905), (5, 42696181), (11, 19407355), (55, 3881471), (121, 1764305), (257, 830665), (605, 352861), (1285, 166133), (1373, 155485), (2827, 75515), (6865, 31097), (14135, 15103)]