640097926

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{239}}^2\times {\mathrm{431}}^1$

素因数の和:924

約数の個数: 24

約数和(自身を含む): 1040757984

約数和(自身を除く): 400660058

約数列:

[1, 2, 13, 26, 239, 431, 478, 862, 3107, 5603, 6214, 11206, 57121, 103009, 114242, 206018, 742573, 1339117, 1485146, 2678234, 24619151, 49238302, 320048963, 640097926]

約数ペア:

[(1, 640097926), (2, 320048963), (13, 49238302), (26, 24619151), (239, 2678234), (431, 1485146), (478, 1339117), (862, 742573), (3107, 206018), (5603, 114242), (6214, 103009), (11206, 57121)]