219874820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{999431}}^1$

素因数の和:999451

約数の個数: 24

約数和(自身を含む): 503713728

約数和(自身を除く): 283838908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 999431, 1998862, 3997724, 4997155, 9994310, 10993741, 19988620, 21987482, 43974964, 54968705, 109937410, 219874820]

約数ペア:

[(1, 219874820), (2, 109937410), (4, 54968705), (5, 43974964), (10, 21987482), (11, 19988620), (20, 10993741), (22, 9994310), (44, 4997155), (55, 3997724), (110, 1998862), (220, 999431)]