18270040

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{691}}^1$

素因数の和:1363

約数の個数: 32

約数和(自身を含む): 41229360

約数和(自身を除く): 22959320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 691, 1322, 1382, 2644, 2764, 3305, 3455, 5288, 5528, 6610, 6910, 13220, 13820, 26440, 27640, 456751, 913502, 1827004, 2283755, 3654008, 4567510, 9135020, 18270040]

約数ペア:

[(1, 18270040), (2, 9135020), (4, 4567510), (5, 3654008), (8, 2283755), (10, 1827004), (20, 913502), (40, 456751), (661, 27640), (691, 26440), (1322, 13820), (1382, 13220), (2644, 6910), (2764, 6610), (3305, 5528), (3455, 5288)]