398901998

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{13441}}^1$

素因数の和:13544

約数の個数: 32

約数和(自身を含む): 696833280

約数和(自身を除く): 297931282

約数列:

[1, 2, 11, 19, 22, 38, 71, 142, 209, 418, 781, 1349, 1562, 2698, 13441, 14839, 26882, 29678, 147851, 255379, 295702, 510758, 954311, 1908622, 2809169, 5618338, 10497421, 18131909, 20994842, 36263818, 199450999, 398901998]

約数ペア:

[(1, 398901998), (2, 199450999), (11, 36263818), (19, 20994842), (22, 18131909), (38, 10497421), (71, 5618338), (142, 2809169), (209, 1908622), (418, 954311), (781, 510758), (1349, 295702), (1562, 255379), (2698, 147851), (13441, 29678), (14839, 26882)]