209855855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{491}}^1$

素因数の和:935

約数の個数: 32

約数和(自身を含む): 290476800

約数和(自身を除く): 80620945

約数列:

[1, 5, 11, 19, 55, 95, 209, 409, 491, 1045, 2045, 2455, 4499, 5401, 7771, 9329, 22495, 27005, 38855, 46645, 85481, 102619, 200819, 427405, 513095, 1004095, 2209009, 3815561, 11045045, 19077805, 41971171, 209855855]

約数ペア:

[(1, 209855855), (5, 41971171), (11, 19077805), (19, 11045045), (55, 3815561), (95, 2209009), (209, 1004095), (409, 513095), (491, 427405), (1045, 200819), (2045, 102619), (2455, 85481), (4499, 46645), (5401, 38855), (7771, 27005), (9329, 22495)]