66988988

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{138407}}^1$

素因数の和:138433

約数の個数: 18

約数和(自身を含む): 128857848

約数和(自身を除く): 61868860

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 138407, 276814, 553628, 1522477, 3044954, 6089908, 16747247, 33494494, 66988988]

約数ペア:

[(1, 66988988), (2, 33494494), (4, 16747247), (11, 6089908), (22, 3044954), (44, 1522477), (121, 553628), (242, 276814), (484, 138407)]