18914104

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{157}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 40015080

約数和(自身を除く): 21100976

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 74, 88, 148, 157, 296, 314, 407, 628, 814, 1256, 1369, 1628, 1727, 2738, 3256, 3454, 5476, 5809, 6908, 10952, 11618, 13816, 15059, 23236, 30118, 46472, 60236, 63899, 120472, 127798, 214933, 255596, 429866, 511192, 859732, 1719464, 2364263, 4728526, 9457052, 18914104]

約数ペア:

[(1, 18914104), (2, 9457052), (4, 4728526), (8, 2364263), (11, 1719464), (22, 859732), (37, 511192), (44, 429866), (74, 255596), (88, 214933), (148, 127798), (157, 120472), (296, 63899), (314, 60236), (407, 46472), (628, 30118), (814, 23236), (1256, 15059), (1369, 13816), (1628, 11618), (1727, 10952), (2738, 6908), (3256, 5809), (3454, 5476)]