987156760

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{129209}}^1$

素因数の和:129411

約数の個数: 32

約数和(自身を含む): 2232748800

約数和(自身を除く): 1245592040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 129209, 258418, 516836, 646045, 1033672, 1292090, 2584180, 5168360, 24678919, 49357838, 98715676, 123394595, 197431352, 246789190, 493578380, 987156760]

約数ペア:

[(1, 987156760), (2, 493578380), (4, 246789190), (5, 197431352), (8, 123394595), (10, 98715676), (20, 49357838), (40, 24678919), (191, 5168360), (382, 2584180), (764, 1292090), (955, 1033672), (1528, 646045), (1910, 516836), (3820, 258418), (7640, 129209)]