20555378

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{4787}}^1$

素因数の和:4921

約数の個数: 16

約数和(自身を含む): 32749920

約数和(自身を除く): 12194542

約数列:

[1, 2, 19, 38, 113, 226, 2147, 4294, 4787, 9574, 90953, 181906, 540931, 1081862, 10277689, 20555378]

約数ペア:

[(1, 20555378), (2, 10277689), (19, 1081862), (38, 540931), (113, 181906), (226, 90953), (2147, 9574), (4294, 4787)]