18724040

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2803}}^1$

素因数の和:2981

約数の個数: 32

約数和(自身を含む): 42396480

約数和(自身を除く): 23672440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 2803, 3340, 5606, 6680, 11212, 14015, 22424, 28030, 56060, 112120, 468101, 936202, 1872404, 2340505, 3744808, 4681010, 9362020, 18724040]

約数ペア:

[(1, 18724040), (2, 9362020), (4, 4681010), (5, 3744808), (8, 2340505), (10, 1872404), (20, 936202), (40, 468101), (167, 112120), (334, 56060), (668, 28030), (835, 22424), (1336, 14015), (1670, 11212), (2803, 6680), (3340, 5606)]