20489924

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{311}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 44518656

約数和(自身を除く): 24028732

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 181, 182, 311, 362, 364, 622, 724, 1244, 1267, 2177, 2353, 2534, 4043, 4354, 4706, 5068, 8086, 8708, 9412, 16172, 16471, 28301, 32942, 56291, 56602, 65884, 112582, 113204, 225164, 394037, 731783, 788074, 1463566, 1576148, 2927132, 5122481, 10244962, 20489924]

約数ペア:

[(1, 20489924), (2, 10244962), (4, 5122481), (7, 2927132), (13, 1576148), (14, 1463566), (26, 788074), (28, 731783), (52, 394037), (91, 225164), (181, 113204), (182, 112582), (311, 65884), (362, 56602), (364, 56291), (622, 32942), (724, 28301), (1244, 16471), (1267, 16172), (2177, 9412), (2353, 8708), (2534, 8086), (4043, 5068), (4354, 4706)]