21649004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{911}}^1$

素因数の和:1385

約数の個数: 24

約数和(自身を含む): 40934208

約数和(自身を除く): 19285204

約数列:

[1, 2, 4, 13, 26, 52, 457, 911, 914, 1822, 1828, 3644, 5941, 11843, 11882, 23686, 23764, 47372, 416327, 832654, 1665308, 5412251, 10824502, 21649004]

約数ペア:

[(1, 21649004), (2, 10824502), (4, 5412251), (13, 1665308), (26, 832654), (52, 416327), (457, 47372), (911, 23764), (914, 23686), (1822, 11882), (1828, 11843), (3644, 5941)]