20040813

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1663}}^1$

素因数の和:1785

約数の個数: 24

約数和(自身を含む): 31496192

約数和(自身を除く): 11455379

約数列:

[1, 3, 9, 13, 39, 103, 117, 309, 927, 1339, 1663, 4017, 4989, 12051, 14967, 21619, 64857, 171289, 194571, 513867, 1541601, 2226757, 6680271, 20040813]

約数ペア:

[(1, 20040813), (3, 6680271), (9, 2226757), (13, 1541601), (39, 513867), (103, 194571), (117, 171289), (309, 64857), (927, 21619), (1339, 14967), (1663, 12051), (4017, 4989)]