20519512

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{1033}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 41690880

約数和(自身を除く): 21171368

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 191, 382, 764, 1033, 1528, 2066, 2483, 4132, 4966, 8264, 9932, 13429, 19864, 26858, 53716, 107432, 197303, 394606, 789212, 1578424, 2564939, 5129878, 10259756, 20519512]

約数ペア:

[(1, 20519512), (2, 10259756), (4, 5129878), (8, 2564939), (13, 1578424), (26, 789212), (52, 394606), (104, 197303), (191, 107432), (382, 53716), (764, 26858), (1033, 19864), (1528, 13429), (2066, 9932), (2483, 8264), (4132, 4966)]