20189879888

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40705403}}^1$

素因数の和:40705442

約数の個数: 20

約数和(自身を含む): 40379760768

約数和(自身を除く): 20189880880

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40705403, 81410806, 162821612, 325643224, 651286448, 1261867493, 2523734986, 5047469972, 10094939944, 20189879888]

約数ペア:

[(1, 20189879888), (2, 10094939944), (4, 5047469972), (8, 2523734986), (16, 1261867493), (31, 651286448), (62, 325643224), (124, 162821612), (248, 81410806), (496, 40705403)]