4004

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:35

約数の個数: 24

約数和(自身を含む): 9408

約数和(自身を除く): 5404

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004]

約数ペア:

[(1, 4004), (2, 2002), (4, 1001), (7, 572), (11, 364), (13, 308), (14, 286), (22, 182), (26, 154), (28, 143), (44, 91), (52, 77)]