219861455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{128951}}^1$

素因数の和:128998

約数の個数: 16

約数和(自身を含む): 297105408

約数和(自身を除く): 77243953

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 128951, 644755, 1418461, 3997481, 7092305, 19987405, 43972291, 219861455]

約数ペア:

[(1, 219861455), (5, 43972291), (11, 19987405), (31, 7092305), (55, 3997481), (155, 1418461), (341, 644755), (1705, 128951)]