20320376

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{81937}}^1$

素因数の和:81974

約数の個数: 16

約数和(自身を含む): 39330240

約数和(自身を除く): 19009864

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 81937, 163874, 327748, 655496, 2540047, 5080094, 10160188, 20320376]

約数ペア:

[(1, 20320376), (2, 10160188), (4, 5080094), (8, 2540047), (31, 655496), (62, 327748), (124, 163874), (248, 81937)]