20438761

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{619}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 24105600

約数和(自身を除く): 3666839

約数列:

[1, 7, 53, 89, 371, 619, 623, 4333, 4717, 32807, 33019, 55091, 229649, 385637, 2919823, 20438761]

約数ペア:

[(1, 20438761), (7, 2919823), (53, 385637), (89, 229649), (371, 55091), (619, 33019), (623, 32807), (4333, 4717)]