889304840

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{203969}}^1$

素因数の和:204089

約数の個数: 32

約数和(自身を含む): 2019303000

約数和(自身を除く): 1129998160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 203969, 407938, 815876, 1019845, 1631752, 2039690, 4079380, 8158760, 22232621, 44465242, 88930484, 111163105, 177860968, 222326210, 444652420, 889304840]

約数ペア:

[(1, 889304840), (2, 444652420), (4, 222326210), (5, 177860968), (8, 111163105), (10, 88930484), (20, 44465242), (40, 22232621), (109, 8158760), (218, 4079380), (436, 2039690), (545, 1631752), (872, 1019845), (1090, 815876), (2180, 407938), (4360, 203969)]