2181391888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{10487461}}^1$

素因数の和:10487482

約数の個数: 20

約数和(自身を含む): 4551558508

約数和(自身を除く): 2370166620

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 10487461, 20974922, 41949844, 83899688, 136336993, 167799376, 272673986, 545347972, 1090695944, 2181391888]

約数ペア:

[(1, 2181391888), (2, 1090695944), (4, 545347972), (8, 272673986), (13, 167799376), (16, 136336993), (26, 83899688), (52, 41949844), (104, 20974922), (208, 10487461)]