1999.00000

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:211

約数の個数: 24

約数和(自身を含む): 181440

約数和(自身を除く): 99100

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 179, 230, 358, 460, 716, 895, 1790, 3580, 4117, 8234, 16468, 20585, 41170, 82340]

約数ペア:

[(1, 82340), (2, 41170), (4, 20585), (5, 16468), (10, 8234), (20, 4117), (23, 3580), (46, 1790), (92, 895), (115, 716), (179, 460), (230, 358)]