18400888

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{991}}^1$

素因数の和:1219

約数の個数: 32

約数和(自身を含む): 37854720

約数和(自身を除く): 19453832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 211, 422, 844, 991, 1688, 1982, 2321, 3964, 4642, 7928, 9284, 10901, 18568, 21802, 43604, 87208, 209101, 418202, 836404, 1672808, 2300111, 4600222, 9200444, 18400888]

約数ペア:

[(1, 18400888), (2, 9200444), (4, 4600222), (8, 2300111), (11, 1672808), (22, 836404), (44, 418202), (88, 209101), (211, 87208), (422, 43604), (844, 21802), (991, 18568), (1688, 10901), (1982, 9284), (2321, 7928), (3964, 4642)]