20178160

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4759}}^1$

素因数の和:4825

約数の個数: 40

約数和(自身を含む): 47809440

約数和(自身を除く): 27631280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4759, 9518, 19036, 23795, 38072, 47590, 76144, 95180, 190360, 252227, 380720, 504454, 1008908, 1261135, 2017816, 2522270, 4035632, 5044540, 10089080, 20178160]

約数ペア:

[(1, 20178160), (2, 10089080), (4, 5044540), (5, 4035632), (8, 2522270), (10, 2017816), (16, 1261135), (20, 1008908), (40, 504454), (53, 380720), (80, 252227), (106, 190360), (212, 95180), (265, 76144), (424, 47590), (530, 38072), (848, 23795), (1060, 19036), (2120, 9518), (4240, 4759)]