19971766

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{1289}}^1$

素因数の和:1479

約数の個数: 16

約数和(自身を含む): 30712320

約数和(自身を除く): 10740554

約数列:

[1, 2, 61, 122, 127, 254, 1289, 2578, 7747, 15494, 78629, 157258, 163703, 327406, 9985883, 19971766]

約数ペア:

[(1, 19971766), (2, 9985883), (61, 327406), (122, 163703), (127, 157258), (254, 78629), (1289, 15494), (2578, 7747)]