18542840

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{929}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 41850000

約数和(自身を除く): 23307160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 929, 998, 1858, 1996, 2495, 3716, 3992, 4645, 4990, 7432, 9290, 9980, 18580, 19960, 37160, 463571, 927142, 1854284, 2317855, 3708568, 4635710, 9271420, 18542840]

約数ペア:

[(1, 18542840), (2, 9271420), (4, 4635710), (5, 3708568), (8, 2317855), (10, 1854284), (20, 927142), (40, 463571), (499, 37160), (929, 19960), (998, 18580), (1858, 9980), (1996, 9290), (2495, 7432), (3716, 4990), (3992, 4645)]