19977904

素因数分解:

$2^4\times {\mathrm{151}}^1\times {\mathrm{8269}}^1$

素因数の和:8428

約数の個数: 20

約数和(自身を含む): 38968240

約数和(自身を除く): 18990336

約数列:

[1, 2, 4, 8, 16, 151, 302, 604, 1208, 2416, 8269, 16538, 33076, 66152, 132304, 1248619, 2497238, 4994476, 9988952, 19977904]

約数ペア:

[(1, 19977904), (2, 9988952), (4, 4994476), (8, 2497238), (16, 1248619), (151, 132304), (302, 66152), (604, 33076), (1208, 16538), (2416, 8269)]