18478292

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4099}}^1$

素因数の和:4140

約数の個数: 36

約数和(自身を含む): 39261600

約数和(自身を除く): 20783308

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4099, 4508, 8198, 16396, 28693, 57386, 94277, 114772, 188554, 200851, 377108, 401702, 659939, 803404, 1319878, 2639756, 4619573, 9239146, 18478292]

約数ペア:

[(1, 18478292), (2, 9239146), (4, 4619573), (7, 2639756), (14, 1319878), (23, 803404), (28, 659939), (46, 401702), (49, 377108), (92, 200851), (98, 188554), (161, 114772), (196, 94277), (322, 57386), (644, 28693), (1127, 16396), (2254, 8198), (4099, 4508)]