20505368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2777}}^1$

素因数の和:2867

約数の個数: 32

約数和(自身を含む): 42003360

約数和(自身を除く): 21497992

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 104, 142, 284, 568, 923, 1846, 2777, 3692, 5554, 7384, 11108, 22216, 36101, 72202, 144404, 197167, 288808, 394334, 788668, 1577336, 2563171, 5126342, 10252684, 20505368]

約数ペア:

[(1, 20505368), (2, 10252684), (4, 5126342), (8, 2563171), (13, 1577336), (26, 788668), (52, 394334), (71, 288808), (104, 197167), (142, 144404), (284, 72202), (568, 36101), (923, 22216), (1846, 11108), (2777, 7384), (3692, 5554)]