19186420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87211}}^1$

素因数の和:87231

約数の個数: 24

約数和(自身を含む): 43954848

約数和(自身を除く): 24768428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87211, 174422, 348844, 436055, 872110, 959321, 1744220, 1918642, 3837284, 4796605, 9593210, 19186420]

約数ペア:

[(1, 19186420), (2, 9593210), (4, 4796605), (5, 3837284), (10, 1918642), (11, 1744220), (20, 959321), (22, 872110), (44, 436055), (55, 348844), (110, 174422), (220, 87211)]