19984930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12413}}^1$

素因数の和:12450

約数の個数: 32

約数和(自身を含む): 42902784

約数和(自身を除く): 22917854

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610, 12413, 24826, 62065, 86891, 124130, 173782, 285499, 434455, 570998, 868910, 1427495, 1998493, 2854990, 3996986, 9992465, 19984930]

約数ペア:

[(1, 19984930), (2, 9992465), (5, 3996986), (7, 2854990), (10, 1998493), (14, 1427495), (23, 868910), (35, 570998), (46, 434455), (70, 285499), (115, 173782), (161, 124130), (230, 86891), (322, 62065), (805, 24826), (1610, 12413)]