639054

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{2731}}^1$

素因数の和:2752

約数の個数: 24

約数和(自身を含む): 1491672

約数和(自身を除く): 852618

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 2731, 5462, 8193, 16386, 24579, 35503, 49158, 71006, 106509, 213018, 319527, 639054]

約数ペア:

[(1, 639054), (2, 319527), (3, 213018), (6, 106509), (9, 71006), (13, 49158), (18, 35503), (26, 24579), (39, 16386), (78, 8193), (117, 5462), (234, 2731)]