20494940

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9949}}^1$

素因数の和:10061

約数の個数: 24

約数和(自身を含む): 43461600

約数和(自身を除く): 22966660

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 9949, 19898, 39796, 49745, 99490, 198980, 1024747, 2049494, 4098988, 5123735, 10247470, 20494940]

約数ペア:

[(1, 20494940), (2, 10247470), (4, 5123735), (5, 4098988), (10, 2049494), (20, 1024747), (103, 198980), (206, 99490), (412, 49745), (515, 39796), (1030, 19898), (2060, 9949)]