289291880

素因数分解:

$2^3\times 5^1\times {\mathrm{1381}}^1\times {\mathrm{5237}}^1$

素因数の和:6629

約数の個数: 32

約数和(自身を含む): 651502440

約数和(自身を除く): 362210560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1381, 2762, 5237, 5524, 6905, 10474, 11048, 13810, 20948, 26185, 27620, 41896, 52370, 55240, 104740, 209480, 7232297, 14464594, 28929188, 36161485, 57858376, 72322970, 144645940, 289291880]

約数ペア:

[(1, 289291880), (2, 144645940), (4, 72322970), (5, 57858376), (8, 36161485), (10, 28929188), (20, 14464594), (40, 7232297), (1381, 209480), (2762, 104740), (5237, 55240), (5524, 52370), (6905, 41896), (10474, 27620), (11048, 26185), (13810, 20948)]