18018988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{2003}}^1$

素因数の和:2193

約数の個数: 24

約数和(自身を含む): 34172208

約数和(自身を除く): 16153220

約数列:

[1, 2, 4, 13, 26, 52, 173, 346, 692, 2003, 2249, 4006, 4498, 8012, 8996, 26039, 52078, 104156, 346519, 693038, 1386076, 4504747, 9009494, 18018988]

約数ペア:

[(1, 18018988), (2, 9009494), (4, 4504747), (13, 1386076), (26, 693038), (52, 346519), (173, 104156), (346, 52078), (692, 26039), (2003, 8996), (2249, 8012), (4006, 4498)]