20180560

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1693}}^1$

素因数の和:1855

約数の個数: 40

約数和(自身を含む): 47262600

約数和(自身を除く): 27082040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 1693, 2384, 2980, 3386, 5960, 6772, 8465, 11920, 13544, 16930, 27088, 33860, 67720, 135440, 252257, 504514, 1009028, 1261285, 2018056, 2522570, 4036112, 5045140, 10090280, 20180560]

約数ペア:

[(1, 20180560), (2, 10090280), (4, 5045140), (5, 4036112), (8, 2522570), (10, 2018056), (16, 1261285), (20, 1009028), (40, 504514), (80, 252257), (149, 135440), (298, 67720), (596, 33860), (745, 27088), (1192, 16930), (1490, 13544), (1693, 11920), (2384, 8465), (2980, 6772), (3386, 5960)]