20457878

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{31091}}^1$

素因数の和:31147

約数の個数: 16

約数和(自身を含む): 35817984

約数和(自身を除く): 15360106

約数列:

[1, 2, 7, 14, 47, 94, 329, 658, 31091, 62182, 217637, 435274, 1461277, 2922554, 10228939, 20457878]

約数ペア:

[(1, 20457878), (2, 10228939), (7, 2922554), (14, 1461277), (47, 435274), (94, 217637), (329, 62182), (658, 31091)]