18807280

素因数分解:

$2^4\times 5^1\times {\mathrm{235091}}^1$

素因数の和:235104

約数の個数: 20

約数和(自身を含む): 43727112

約数和(自身を除く): 24919832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 235091, 470182, 940364, 1175455, 1880728, 2350910, 3761456, 4701820, 9403640, 18807280]

約数ペア:

[(1, 18807280), (2, 9403640), (4, 4701820), (5, 3761456), (8, 2350910), (10, 1880728), (16, 1175455), (20, 940364), (40, 470182), (80, 235091)]