218974855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{128431}}^1$

素因数の和:128478

約数の個数: 16

約数和(自身を含む): 295907328

約数和(自身を除く): 76932473

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 128431, 642155, 1412741, 3981361, 7063705, 19906805, 43794971, 218974855]

約数ペア:

[(1, 218974855), (5, 43794971), (11, 19906805), (31, 7063705), (55, 3981361), (155, 1412741), (341, 642155), (1705, 128431)]